diff --git a/backend/src/main/java/com/designhub/controller/ConfigController.java b/backend/src/main/java/com/designhub/controller/ConfigController.java
index 9e4835d..cae7b8a 100644
--- a/backend/src/main/java/com/designhub/controller/ConfigController.java
+++ b/backend/src/main/java/com/designhub/controller/ConfigController.java
@@ -29,18 +29,42 @@ public class ConfigController {
 
     // ============ 需求类型管理 ============
 
-    @Operation(summary = "获取所有需求类型（包括禁用的，用于管理页面）")
+    @Operation(summary = "获取所有需求类型（包括禁用的，用于管理页面）- 平铺列表")
     @GetMapping("/demand-types")
     public Result<List<DemandType>> getAllDemandTypes() {
         return Result.success(configService.getAllDemandTypes());
     }
+
+    @Operation(summary = "获取所有需求类型（树形结构）")
+    @GetMapping("/demand-types/tree")
+    public Result<List<DemandType>> getDemandTypesTree() {
+        return Result.success(configService.getDemandTypesTree());
+    }
+
+    @Operation(summary = "获取所有大分类（parentId为null的）")
+    @GetMapping("/demand-types/parents")
+    public Result<List<DemandType>> getParentDemandTypes() {
+        return Result.success(configService.getParentDemandTypes());
+    }
+
+    @Operation(summary = "根据父ID获取子分类")
+    @GetMapping("/demand-types/parent/{parentId}")
+    public Result<List<DemandType>> getDemandTypesByParentId(@PathVariable Long parentId) {
+        return Result.success(configService.getDemandTypesByParentId(parentId));
+    }
     
-    @Operation(summary = "获取所有启用的需求类型（用于下拉选择）")
+    @Operation(summary = "获取所有启用的需求类型（用于下拉选择）- 树形结构")
     @GetMapping("/demand-types/enabled")
     public Result<List<DemandType>> getEnabledDemandTypes() {
         return Result.success(configService.getEnabledDemandTypes());
     }
 
+    @Operation(summary = "获取所有启用的需求类型（平铺列表）")
+    @GetMapping("/demand-types/enabled/list")
+    public Result<List<DemandType>> getEnabledDemandTypesList() {
+        return Result.success(configService.getEnabledDemandTypesList());
+    }
+
     @Operation(summary = "根据ID获取需求类型")
     @GetMapping("/demand-types/{id:\\d+}")
     public Result<DemandType> getDemandTypeById(@PathVariable Long id) {
diff --git a/backend/src/main/java/com/designhub/controller/TaskSubTypeController.java b/backend/src/main/java/com/designhub/controller/TaskSubTypeController.java
index adca708..b03bef0 100644
--- a/backend/src/main/java/com/designhub/controller/TaskSubTypeController.java
+++ b/backend/src/main/java/com/designhub/controller/TaskSubTypeController.java
@@ -78,28 +78,4 @@ public class TaskSubTypeController {
         taskSubTypeService.updateSortOrder(id, sortOrder);
         return Result.success();
     }
-
-    @Operation(summary = "获取树形结构列表（父子层级）")
-    @GetMapping("/tree")
-    public Result<List<TaskSubType>> getTreeList() {
-        return Result.success(taskSubTypeService.getTreeList());
-    }
-
-    @Operation(summary = "获取启用的树形结构")
-    @GetMapping("/tree/enabled")
-    public Result<List<TaskSubType>> getEnabledTreeList() {
-        return Result.success(taskSubTypeService.getEnabledTreeList());
-    }
-
-    @Operation(summary = "获取父级分类列表（需求类型大分类）")
-    @GetMapping("/parents")
-    public Result<List<TaskSubType>> getParentSubTypes() {
-        return Result.success(taskSubTypeService.getParentSubTypes());
-    }
-
-    @Operation(summary = "获取指定父级下的子分类")
-    @GetMapping("/children/{parentId}")
-    public Result<List<TaskSubType>> getChildrenByParentId(@PathVariable Long parentId) {
-        return Result.success(taskSubTypeService.getChildrenByParentId(parentId));
-    }
 }
diff --git a/backend/src/main/java/com/designhub/entity/DemandType.java b/backend/src/main/java/com/designhub/entity/DemandType.java
index 3fb72ff..16bd9d4 100644
--- a/backend/src/main/java/com/designhub/entity/DemandType.java
+++ b/backend/src/main/java/com/designhub/entity/DemandType.java
@@ -3,7 +3,9 @@ package com.designhub.entity;
 import com.baomidou.mybatisplus.annotation.*;
 import lombok.Data;
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.time.LocalDateTime;
+import java.util.List;
 
 /**
  * 需求类型实体类
@@ -20,6 +22,12 @@ public class DemandType implements Serializable {
     @TableId(value = "id", type = IdType.AUTO)
     private Long id;
 
+    /**
+     * 父级ID，null表示大分类
+     */
+    @TableField("parent_id")
+    private Long parentId;
+
     /**
      * 类型名称
      */
@@ -27,10 +35,16 @@ public class DemandType implements Serializable {
     private String name;
 
     /**
-     * 单价（积分）
+     * 单价分值（支持小数）
      */
     @TableField("unit_score")
-    private Integer unitScore;
+    private BigDecimal unitScore;
+
+    /**
+     * 旧单价积分字段（兼容）
+     */
+    @TableField(exist = false)
+    private Integer unitScoreInt;
 
     /**
      * 预估工时（小时）
@@ -71,5 +85,17 @@ public class DemandType implements Serializable {
      */
     @TableField(fill = FieldFill.INSERT_UPDATE)
     private LocalDateTime updateTime;
+
+    /**
+     * 子分类列表（不存储在数据库）
+     */
+    @TableField(exist = false)
+    private List<DemandType> children;
+
+    /**
+     * 父分类名称（不存储在数据库）
+     */
+    @TableField(exist = false)
+    private String parentName;
 }
 
diff --git a/backend/src/main/java/com/designhub/entity/TaskSubType.java b/backend/src/main/java/com/designhub/entity/TaskSubType.java
index 40fe049..c30bfe8 100644
--- a/backend/src/main/java/com/designhub/entity/TaskSubType.java
+++ b/backend/src/main/java/com/designhub/entity/TaskSubType.java
@@ -4,9 +4,7 @@ import com.baomidou.mybatisplus.annotation.*;
 import lombok.Data;
 
 import java.io.Serializable;
-import java.math.BigDecimal;
 import java.time.LocalDateTime;
-import java.util.List;
 
 /**
  * 任务子类型实体
@@ -22,11 +20,6 @@ public class TaskSubType implements Serializable {
     @TableId(type = IdType.AUTO)
     private Long id;
 
-    /**
-     * 父级ID，NULL表示顶级分类（需求类型大分类）
-     */
-    private Long parentId;
-
     /**
      * 子类型名称
      */
@@ -42,11 +35,6 @@ public class TaskSubType implements Serializable {
      */
     private String description;
 
-    /**
-     * 单价分值
-     */
-    private BigDecimal unitPrice;
-
     /**
      * 排序
      */
@@ -63,24 +51,6 @@ public class TaskSubType implements Serializable {
      */
     private Integer checkInventory;
 
-    /**
-     * 可接单部门ID列表（逗号分隔），只在父级分类上设置
-     * 子分类自动继承父分类的设置
-     */
-    private String allowedDeptIds;
-
-    /**
-     * 子分类列表（非数据库字段）
-     */
-    @TableField(exist = false)
-    private List<TaskSubType> children;
-
-    /**
-     * 前端使用的部门ID数组（非数据库字段）
-     */
-    @TableField(exist = false)
-    private List<Long> departmentIds;
-
     /**
      * 创建时间
      */
@@ -165,28 +135,4 @@ public class TaskSubType implements Serializable {
     public void setUpdateTime(LocalDateTime updateTime) {
         this.updateTime = updateTime;
     }
-
-    public Long getParentId() {
-        return parentId;
-    }
-
-    public void setParentId(Long parentId) {
-        this.parentId = parentId;
-    }
-
-    public BigDecimal getUnitPrice() {
-        return unitPrice;
-    }
-
-    public void setUnitPrice(BigDecimal unitPrice) {
-        this.unitPrice = unitPrice;
-    }
-
-    public List<TaskSubType> getChildren() {
-        return children;
-    }
-
-    public void setChildren(List<TaskSubType> children) {
-        this.children = children;
-    }
 }
diff --git a/backend/src/main/java/com/designhub/service/ConfigService.java b/backend/src/main/java/com/designhub/service/ConfigService.java
index a3ee383..21d24c9 100644
--- a/backend/src/main/java/com/designhub/service/ConfigService.java
+++ b/backend/src/main/java/com/designhub/service/ConfigService.java
@@ -23,31 +23,126 @@ public class ConfigService {
     // ============ 需求类型管理 ============
 
     /**
-     * 获取所有需求类型（包括禁用的，用于管理页面）
+     * 获取所有需求类型（包括禁用的，用于管理页面）- 平铺列表
      */
     public List<DemandType> getAllDemandTypes() {
+        List<DemandType> list = demandTypeMapper.selectList(
+            new LambdaQueryWrapper<DemandType>()
+                .orderByAsc(DemandType::getParentId)
+                .orderByAsc(DemandType::getSortOrder)
+        );
+        // 填充父分类名称
+        for (DemandType dt : list) {
+            if (dt.getParentId() != null) {
+                DemandType parent = demandTypeMapper.selectById(dt.getParentId());
+                if (parent != null) {
+                    dt.setParentName(parent.getName());
+                }
+            }
+        }
+        return list;
+    }
+
+    /**
+     * 获取所有需求类型（树形结构）
+     */
+    public List<DemandType> getDemandTypesTree() {
+        List<DemandType> allTypes = demandTypeMapper.selectList(
+            new LambdaQueryWrapper<DemandType>()
+                .orderByAsc(DemandType::getSortOrder)
+        );
+        // 构建树形结构
+        return buildDemandTypeTree(allTypes);
+    }
+
+    /**
+     * 获取所有大分类（parentId为null的）
+     */
+    public List<DemandType> getParentDemandTypes() {
         return demandTypeMapper.selectList(
             new LambdaQueryWrapper<DemandType>()
+                .isNull(DemandType::getParentId)
+                .orderByAsc(DemandType::getSortOrder)
+        );
+    }
+
+    /**
+     * 根据父ID获取子分类
+     */
+    public List<DemandType> getDemandTypesByParentId(Long parentId) {
+        return demandTypeMapper.selectList(
+            new LambdaQueryWrapper<DemandType>()
+                .eq(DemandType::getParentId, parentId)
                 .orderByAsc(DemandType::getSortOrder)
         );
     }
     
     /**
-     * 获取所有启用的需求类型（用于下拉选择）
+     * 获取所有启用的需求类型（用于下拉选择）- 树形结构
      */
     public List<DemandType> getEnabledDemandTypes() {
-        return demandTypeMapper.selectList(
+        List<DemandType> allTypes = demandTypeMapper.selectList(
             new LambdaQueryWrapper<DemandType>()
                 .eq(DemandType::getIsEnabled, 1)
                 .orderByAsc(DemandType::getSortOrder)
         );
+        return buildDemandTypeTree(allTypes);
+    }
+
+    /**
+     * 获取所有启用的需求类型（平铺列表，用于表单选择）
+     */
+    public List<DemandType> getEnabledDemandTypesList() {
+        List<DemandType> list = demandTypeMapper.selectList(
+            new LambdaQueryWrapper<DemandType>()
+                .eq(DemandType::getIsEnabled, 1)
+                .orderByAsc(DemandType::getParentId)
+                .orderByAsc(DemandType::getSortOrder)
+        );
+        // 填充父分类名称
+        for (DemandType dt : list) {
+            if (dt.getParentId() != null) {
+                DemandType parent = demandTypeMapper.selectById(dt.getParentId());
+                if (parent != null) {
+                    dt.setParentName(parent.getName());
+                }
+            }
+        }
+        return list;
+    }
+
+    /**
+     * 构建需求类型树形结构
+     */
+    private List<DemandType> buildDemandTypeTree(List<DemandType> allTypes) {
+        // 获取所有根节点（parentId为null）
+        List<DemandType> roots = allTypes.stream()
+            .filter(dt -> dt.getParentId() == null)
+            .collect(java.util.stream.Collectors.toList());
+        
+        // 为每个根节点填充子节点
+        for (DemandType root : roots) {
+            List<DemandType> children = allTypes.stream()
+                .filter(dt -> root.getId().equals(dt.getParentId()))
+                .collect(java.util.stream.Collectors.toList());
+            root.setChildren(children);
+        }
+        
+        return roots;
     }
 
     /**
      * 根据ID获取需求类型
      */
     public DemandType getDemandTypeById(Long id) {
-        return demandTypeMapper.selectById(id);
+        DemandType dt = demandTypeMapper.selectById(id);
+        if (dt != null && dt.getParentId() != null) {
+            DemandType parent = demandTypeMapper.selectById(dt.getParentId());
+            if (parent != null) {
+                dt.setParentName(parent.getName());
+            }
+        }
+        return dt;
     }
 
     /**
@@ -66,9 +161,15 @@ public class ConfigService {
     }
 
     /**
-     * 删除需求类型
+     * 删除需求类型（如果是大分类，同时删除所有子分类）
      */
     public boolean deleteDemandType(Long id) {
+        // 先删除所有子分类
+        demandTypeMapper.delete(
+            new LambdaQueryWrapper<DemandType>()
+                .eq(DemandType::getParentId, id)
+        );
+        // 再删除自身
         return demandTypeMapper.deleteById(id) > 0;
     }
 
diff --git a/backend/src/main/java/com/designhub/service/TaskSubTypeService.java b/backend/src/main/java/com/designhub/service/TaskSubTypeService.java
index 2c96132..74cb851 100644
--- a/backend/src/main/java/com/designhub/service/TaskSubTypeService.java
+++ b/backend/src/main/java/com/designhub/service/TaskSubTypeService.java
@@ -10,10 +10,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
 
 /**
  * 任务子类型服务
@@ -145,82 +142,4 @@ public class TaskSubTypeService {
         subType.setSortOrder(sortOrder);
         taskSubTypeMapper.updateById(subType);
     }
-
-    /**
-     * 获取树形结构的子类型列表
-     * 返回父子层级结构，便于前端展示和筛选
-     */
-    public List<TaskSubType> getTreeList() {
-        List<TaskSubType> allSubTypes = taskSubTypeMapper.selectList(
-            new LambdaQueryWrapper<TaskSubType>()
-                .orderByAsc(TaskSubType::getSortOrder)
-        );
-
-        // 找出所有顶级分类（parentId为null）
-        List<TaskSubType> parents = allSubTypes.stream()
-            .filter(st -> st.getParentId() == null)
-            .collect(Collectors.toList());
-
-        // 按parentId分组子分类
-        Map<Long, List<TaskSubType>> childrenMap = allSubTypes.stream()
-            .filter(st -> st.getParentId() != null)
-            .collect(Collectors.groupingBy(TaskSubType::getParentId));
-
-        // 为每个父分类设置子分类
-        for (TaskSubType parent : parents) {
-            parent.setChildren(childrenMap.getOrDefault(parent.getId(), new ArrayList<>()));
-        }
-
-        return parents;
-    }
-
-    /**
-     * 获取所有父级分类（需求类型大分类）
-     */
-    public List<TaskSubType> getParentSubTypes() {
-        return taskSubTypeMapper.selectList(
-            new LambdaQueryWrapper<TaskSubType>()
-                .isNull(TaskSubType::getParentId)
-                .orderByAsc(TaskSubType::getSortOrder)
-        );
-    }
-
-    /**
-     * 获取指定父级下的子分类
-     */
-    public List<TaskSubType> getChildrenByParentId(Long parentId) {
-        return taskSubTypeMapper.selectList(
-            new LambdaQueryWrapper<TaskSubType>()
-                .eq(TaskSubType::getParentId, parentId)
-                .orderByAsc(TaskSubType::getSortOrder)
-        );
-    }
-
-    /**
-     * 获取启用的树形结构
-     */
-    public List<TaskSubType> getEnabledTreeList() {
-        List<TaskSubType> allSubTypes = taskSubTypeMapper.selectList(
-            new LambdaQueryWrapper<TaskSubType>()
-                .eq(TaskSubType::getIsEnabled, 1)
-                .orderByAsc(TaskSubType::getSortOrder)
-        );
-
-        // 找出所有顶级分类（parentId为null）
-        List<TaskSubType> parents = allSubTypes.stream()
-            .filter(st -> st.getParentId() == null)
-            .collect(Collectors.toList());
-
-        // 按parentId分组子分类
-        Map<Long, List<TaskSubType>> childrenMap = allSubTypes.stream()
-            .filter(st -> st.getParentId() != null)
-            .collect(Collectors.groupingBy(TaskSubType::getParentId));
-
-        // 为每个父分类设置子分类
-        for (TaskSubType parent : parents) {
-            parent.setChildren(childrenMap.getOrDefault(parent.getId(), new ArrayList<>()));
-        }
-
-        return parents;
-    }
 }
diff --git a/database/update_demand_type_hierarchy.sql b/database/update_demand_type_hierarchy.sql
new file mode 100644
index 0000000..419139b
--- /dev/null
+++ b/database/update_demand_type_hierarchy.sql
@@ -0,0 +1,13 @@
+-- 需求类型添加层级结构支持
+-- 添加父级ID字段
+ALTER TABLE task_type ADD COLUMN IF NOT EXISTS parent_id BIGINT DEFAULT NULL COMMENT '父级ID，null表示大分类';
+
+-- 修改单价字段为支持小数
+ALTER TABLE task_type MODIFY COLUMN unit_score DECIMAL(10, 3) DEFAULT 0 COMMENT '单价分值';
+
+-- 添加索引
+CREATE INDEX IF NOT EXISTS idx_task_type_parent_id ON task_type(parent_id);
+
+-- 为了保持兼容，确保现有数据的parent_id为null（即都是大分类）
+UPDATE task_type SET parent_id = NULL WHERE parent_id IS NULL;
+
diff --git a/frontend/src/api/config.ts b/frontend/src/api/config.ts
index 3c6344f..255ade8 100644
--- a/frontend/src/api/config.ts
+++ b/frontend/src/api/config.ts
@@ -2,14 +2,17 @@ import request from '@/utils/request'
 
 export interface DemandType {
   id: number
+  parentId?: number | null  // 父级ID，null表示大分类
   name: string
-  unitScore: number
+  unitScore: number  // 单价分值（支持小数）
   estimatedHours: number
   description?: string
   sortOrder?: number
   isEnabled?: number
   allowedDeptIds?: string  // 可接单部门ID列表（逗号分隔）
   departmentIds?: number[]  // 前端使用的部门ID数组
+  children?: DemandType[]  // 子分类列表
+  parentName?: string  // 父分类名称
 }
 
 export interface Brand {
@@ -63,35 +66,57 @@ export interface TeamScorePool {
 
 export interface TaskSubType {
   id: number
-  parentId?: number | null    // 父级ID，null表示顶级分类
   name: string
   code: string
   description?: string
-  unitPrice?: number          // 单价分值
   sortOrder?: number
   isEnabled?: number
-  checkInventory?: number     // 是否检查库存
-  allowedDeptIds?: string     // 可接单部门ID（逗号分隔），只在父级分类设置
-  departmentIds?: number[]    // 前端使用的部门ID数组
   createTime?: string
   updateTime?: string
-  children?: TaskSubType[]    // 子分类列表
 }
 
 /**
- * 获取所有需求类型（包括禁用的，用于管理页面）
+ * 获取所有需求类型（包括禁用的，用于管理页面）- 平铺列表
  */
 export const getAllDemandTypes = () => {
   return request.get<any>('/config/demand-types')
 }
 
 /**
- * 获取所有启用的需求类型（用于下拉选择）
+ * 获取所有需求类型（树形结构）
+ */
+export const getDemandTypesTree = () => {
+  return request.get<any>('/config/demand-types/tree')
+}
+
+/**
+ * 获取所有大分类（parentId为null的）
+ */
+export const getParentDemandTypes = () => {
+  return request.get<any>('/config/demand-types/parents')
+}
+
+/**
+ * 根据父ID获取子分类
+ */
+export const getDemandTypesByParentId = (parentId: number) => {
+  return request.get<any>(`/config/demand-types/parent/${parentId}`)
+}
+
+/**
+ * 获取所有启用的需求类型（用于下拉选择）- 树形结构
  */
 export const getEnabledDemandTypes = () => {
   return request.get<any>('/config/demand-types/enabled')
 }
 
+/**
+ * 获取所有启用的需求类型（平铺列表）
+ */
+export const getEnabledDemandTypesList = () => {
+  return request.get<any>('/config/demand-types/enabled/list')
+}
+
 /**
  * 获取所有品牌（包括禁用的，用于管理页面）
  */
@@ -317,31 +342,3 @@ export const toggleTaskSubTypeEnabled = (id: number) => {
   return request.post<any>(`/task-sub-types/${id}/toggle-enabled`)
 }
 
-/**
- * 获取树形结构的任务子类型（父子层级）
- */
-export const getTaskSubTypeTree = () => {
-  return request.get<any>('/task-sub-types/tree')
-}
-
-/**
- * 获取启用的树形结构
- */
-export const getEnabledTaskSubTypeTree = () => {
-  return request.get<any>('/task-sub-types/tree/enabled')
-}
-
-/**
- * 获取父级分类列表（需求类型大分类）
- */
-export const getTaskSubTypeParents = () => {
-  return request.get<any>('/task-sub-types/parents')
-}
-
-/**
- * 获取指定父级下的子分类
- */
-export const getTaskSubTypeChildren = (parentId: number) => {
-  return request.get<any>(`/task-sub-types/children/${parentId}`)
-}
-
diff --git a/frontend/src/views/Settings.vue b/frontend/src/views/Settings.vue
index 18a01e7..bcb0dc3 100644
--- a/frontend/src/views/Settings.vue
+++ b/frontend/src/views/Settings.vue
@@ -89,22 +89,41 @@
             <div class="settings-section">
               <div class="section-header">
                 <h2 class="section-title">需求类型管理</h2>
-                <a-button type="primary" @click="showDemandTypeModal()">
-                  <template #icon><Icon name="plus" size="sm" /></template>
-                  添加类型
-                </a-button>
+                <a-space>
+                  <a-button type="primary" @click="showDemandTypeModal(null, null)">
+                    <template #icon><Icon name="plus" size="sm" /></template>
+                    添加大分类
+                  </a-button>
+                  <a-button @click="showDemandTypeModal(null, 'sub')" :disabled="parentDemandTypes.length === 0">
+                    <template #icon><Icon name="plus" size="sm" /></template>
+                    添加子分类
+                  </a-button>
+                </a-space>
               </div>
 
+              <a-alert type="info" show-icon style="margin-bottom: 16px;">
+                <template #message>
+                  <span>大分类用于设置可接单部门限制，子分类继承大分类的部门设置。单价分值支持小数（如0.35）</span>
+                </template>
+              </a-alert>
+
               <a-table
                 :columns="demandTypeColumns"
                 :data-source="demandTypes"
                 :loading="loading.demandTypes"
                 row-key="id"
-                :pagination="{ pageSize: 10 }"
+                :pagination="{ pageSize: 20 }"
               >
                 <template #bodyCell="{ column, record }">
-                  <template v-if="column.key === 'name'">
-                    <span>{{ record.name || record.description || '--' }}</span>
+                  <template v-if="column.key === 'parentName'">
+                    <span v-if="record.parentId">{{ record.parentName || '--' }}</span>
+                    <a-tag v-else color="blue">大分类</a-tag>
+                  </template>
+                  <template v-else-if="column.key === 'name'">
+                    <span :style="{ paddingLeft: record.parentId ? '20px' : '0' }">
+                      <span v-if="record.parentId">└ </span>
+                      {{ record.name || '--' }}
+                    </span>
                   </template>
                   <template v-else-if="column.key === 'unitScore'">
                     <span>{{ record.unitScore ?? '--' }}</span>
@@ -112,6 +131,15 @@
                   <template v-else-if="column.key === 'estimatedHours'">
                     <span>{{ record.estimatedHours ?? '--' }}</span>
                   </template>
+                  <template v-else-if="column.key === 'allowedDepts'">
+                    <template v-if="!record.parentId">
+                      <span v-if="record.allowedDeptIds">
+                        {{ getDeptNamesFromIds(record.allowedDeptIds) }}
+                      </span>
+                      <span v-else class="text-muted">所有接单部门</span>
+                    </template>
+                    <span v-else class="text-muted">继承大分类</span>
+                  </template>
                   <template v-else-if="column.key === 'status'">
                     <a-switch
                       :checked="record.isEnabled === 1"
@@ -121,7 +149,18 @@
                   <template v-else-if="column.key === 'actions'">
                     <a-space>
                       <a-button type="link" size="small" @click="showDemandTypeModal(record)">编辑</a-button>
-                      <a-popconfirm title="确定删除？" @confirm="deleteItem('demandType', record.id)">
+                      <a-button 
+                        v-if="!record.parentId" 
+                        type="link" 
+                        size="small" 
+                        @click="showDemandTypeModal(null, 'sub', record.id)"
+                      >
+                        添加子分类
+                      </a-button>
+                      <a-popconfirm 
+                        :title="record.parentId ? '确定删除此子分类？' : '确定删除此大分类及其所有子分类？'" 
+                        @confirm="deleteItem('demandType', record.id)"
+                      >
                         <a-button type="link" danger size="small">删除</a-button>
                       </a-popconfirm>
                     </a-space>
@@ -136,57 +175,21 @@
             <div class="settings-section">
               <div class="section-header">
                 <h2 class="section-title">任务子类型管理</h2>
-                <a-space>
-                  <a-select
-                    v-model:value="taskSubTypeFilter.parentId"
-                    placeholder="按需求类型筛选"
-                    style="width: 160px"
-                    allow-clear
-                    @change="filterTaskSubTypes"
-                  >
-                    <a-select-option :value="null">全部类型</a-select-option>
-                    <a-select-option v-for="p in taskSubTypeParents" :key="p.id" :value="p.id">
-                      {{ p.name }}
-                    </a-select-option>
-                  </a-select>
-                  <a-button type="primary" @click="showTaskSubTypeModal(null, true)">
-                    <template #icon><Icon name="plus" size="sm" /></template>
-                    添加大分类
-                  </a-button>
-                  <a-button type="primary" @click="showTaskSubTypeModal()">
-                    <template #icon><Icon name="plus" size="sm" /></template>
-                    添加子类型
-                  </a-button>
-                </a-space>
+                <a-button type="primary" @click="showTaskSubTypeModal()">
+                  <template #icon><Icon name="plus" size="sm" /></template>
+                  添加子类型
+                </a-button>
               </div>
 
               <a-table
                 :columns="taskSubTypeColumns"
-                :data-source="filteredTaskSubTypes"
+                :data-source="taskSubTypes"
                 :loading="loading.taskSubTypes"
                 row-key="id"
-                :pagination="{ pageSize: 15 }"
+                :pagination="{ pageSize: 10 }"
               >
                 <template #bodyCell="{ column, record }">
-                  <template v-if="column.key === 'parentName'">
-                    <a-tag v-if="!record.parentId" color="blue">{{ record.name }}</a-tag>
-                    <span v-else>{{ getParentName(record.parentId) }}</span>
-                  </template>
-                  <template v-else-if="column.key === 'allowedDepts'">
-                    <template v-if="!record.parentId">
-                      <!-- 大分类显示接单部门 -->
-                      <span v-if="record.allowedDeptIds" style="font-size: 12px;">
-                        {{ getAllowedDeptNames(record.allowedDeptIds) }}
-                      </span>
-                      <span v-else style="color: #999; font-size: 12px;">全部部门</span>
-                    </template>
-                    <span v-else style="color: #999; font-size: 12px;">继承大分类</span>
-                  </template>
-                  <template v-else-if="column.key === 'checkInventory'">
-                    <a-tag v-if="record.checkInventory === 1" color="orange">是</a-tag>
-                    <span v-else style="color: #999;">否</span>
-                  </template>
-                  <template v-else-if="column.key === 'status'">
+                  <template v-if="column.key === 'status'">
                     <a-switch
                       :checked="record.isEnabled === 1"
                       @change="(checked: boolean) => toggleStatus('taskSubType', record.id, checked)"
@@ -1158,24 +1161,43 @@
         <!-- 需求类型弹窗 -->
         <a-modal
           v-model:open="modals.demandType"
-          :title="editingItem ? '编辑需求类型' : '添加需求类型'"
+          :title="getDemandTypeModalTitle()"
           @ok="saveDemandType"
           @cancel="closeModal('demandType')"
+          width="600px"
         >
           <a-form :model="formData.demandType" layout="vertical">
+            <!-- 选择所属大分类（仅子分类显示） -->
+            <a-form-item v-if="formData.demandType.isSubType" label="所属大分类" required>
+              <a-select
+                v-model:value="formData.demandType.parentId"
+                placeholder="请选择所属大分类"
+                :disabled="!!editingItem"
+              >
+                <a-select-option
+                  v-for="parent in parentDemandTypes"
+                  :key="parent.id"
+                  :value="parent.id"
+                >
+                  {{ parent.name }}
+                </a-select-option>
+              </a-select>
+            </a-form-item>
+
             <a-form-item label="类型名称" required>
               <a-input v-model:value="formData.demandType.name" placeholder="请输入类型名称" />
             </a-form-item>
-            <a-form-item label="单价积分" required>
+            <a-form-item label="单价分值" required>
               <a-input-number
                 v-model:value="formData.demandType.unitScore"
                 :min="0"
-                :precision="0"
+                :precision="3"
+                :step="0.1"
                 style="width: 100%"
-                placeholder="请输入单价积分"
+                placeholder="请输入单价分值（支持小数，如0.35）"
               />
             </a-form-item>
-            <a-form-item label="预计时长(小时)" required>
+            <a-form-item label="预计时长(小时)">
               <a-input-number
                 v-model:value="formData.demandType.estimatedHours"
                 :min="0"
@@ -1187,7 +1209,9 @@
             <a-form-item label="描述">
               <a-textarea v-model:value="formData.demandType.description" :rows="3" placeholder="请输入描述" />
             </a-form-item>
-            <a-form-item label="可接单部门">
+            
+            <!-- 可接单部门（仅大分类显示） -->
+            <a-form-item v-if="!formData.demandType.isSubType" label="可接单部门">
               <a-select
                 v-model:value="formData.demandType.departmentIds"
                 mode="multiple"
@@ -1195,50 +1219,47 @@
                 allow-clear
                 :max-tag-count="3"
               >
-                <a-select-option
-                  v-for="dept in receivingDepartments"
-                  :key="dept.id"
-                  :value="dept.id"
+                <a-select-opt-group 
+                  v-for="group in flatDepartmentOptions" 
+                  :key="group.label"
+                  :label="group.label"
                 >
-                  {{ dept.deptName }}
-                </a-select-option>
+                  <a-select-option
+                    v-for="dept in group.options"
+                    :key="dept.id"
+                    :value="dept.id"
+                  >
+                    {{ dept.displayName }}
+                  </a-select-option>
+                </a-select-opt-group>
               </a-select>
               <div class="form-tip">
                 <Icon name="info" size="sm" color="#6B6B6B" style="margin-right: 4px;" />
-                限制哪些接单部门可以接这种类型的任务，不选则所有接单部门都可接
+                选择父级部门会自动包含所有子部门。子分类会继承大分类的部门设置。
               </div>
             </a-form-item>
+            
+            <!-- 子分类提示 -->
+            <a-alert v-if="formData.demandType.isSubType" type="info" show-icon>
+              <template #message>
+                <span>子分类将继承大分类的可接单部门设置</span>
+              </template>
+            </a-alert>
           </a-form>
         </a-modal>
 
         <!-- 任务子类型弹窗 -->
         <a-modal
           v-model:open="modals.taskSubType"
-          :title="taskSubTypeModalTitle"
+          :title="editingItem ? '编辑任务子类型' : '添加任务子类型'"
           @ok="saveTaskSubType"
           @cancel="closeModal('taskSubType')"
-          width="640px"
         >
           <a-form :model="formData.taskSubType" layout="vertical">
-            <a-form-item v-if="!isAddingParentType" label="所属需求类型（大分类）">
-              <a-select
-                v-model:value="formData.taskSubType.parentId"
-                placeholder="选择大分类（留空则为顶级分类）"
-                allow-clear
-              >
-                <a-select-option v-for="p in taskSubTypeParents" :key="p.id" :value="p.id">
-                  {{ p.name }}
-                </a-select-option>
-              </a-select>
-              <div class="form-tip" style="margin-top: 4px;">
-                <Icon name="info" size="sm" color="#6B6B6B" style="margin-right: 4px;" />
-                选择大分类后，此子类型将归属于该分类下，并继承大分类的接单部门设置
-              </div>
+            <a-form-item label="子类型名称" required>
+              <a-input v-model:value="formData.taskSubType.name" placeholder="请输入子类型名称（如：新品、优化）" />
             </a-form-item>
-            <a-form-item :label="isAddingParentType ? '需求类型名称' : '需求类型细分名称'" required>
-              <a-input v-model:value="formData.taskSubType.name" :placeholder="isAddingParentType ? '请输入大分类名称（如：主图、详情）' : '请输入细分名称（如：制作、部分调整）'" />
-            </a-form-item>
-            <a-form-item label="编码" required>
+            <a-form-item label="子类型编码" required>
               <a-input v-model:value="formData.taskSubType.code" placeholder="留空自动生成">
                 <template #addonAfter>
                   <a-button size="small" type="link" @click="autoGenerateTaskSubTypeCode" style="padding: 0 8px;">
@@ -1247,60 +1268,25 @@
                 </template>
               </a-input>
             </a-form-item>
-            <!-- 只有大分类才需要设置接单部门 -->
-            <a-form-item v-if="isAddingParentType || (!formData.taskSubType.parentId && editingItem)" label="可接单部门">
-              <a-tree-select
-                v-model:value="formData.taskSubType.departmentIds"
-                :tree-data="receivingDeptTreeData"
-                :field-names="{ children: 'children', label: 'title', value: 'value' }"
-                tree-checkable
-                :show-checked-strategy="SHOW_PARENT"
-                placeholder="选择可接单的部门（选择父部门会自动包含所有子部门）"
+            <a-form-item label="描述">
+              <a-textarea v-model:value="formData.taskSubType.description" :rows="3" placeholder="请输入描述" />
+            </a-form-item>
+            <a-form-item label="排序">
+              <a-input-number
+                v-model:value="formData.taskSubType.sortOrder"
+                :min="0"
+                :precision="0"
                 style="width: 100%"
-                :tree-default-expand-all="true"
-                :max-tag-count="3"
+                placeholder="排序值越小越靠前"
               />
-              <div class="form-tip" style="margin-top: 4px;">
+            </a-form-item>
+            <a-form-item label="是否检查库存">
+              <a-switch v-model:checked="formData.taskSubType.checkInventory" />
+              <div class="form-tip" style="margin-top: 8px;">
                 <Icon name="info" size="sm" color="#6B6B6B" style="margin-right: 4px;" />
-                选择父部门后，其下所有子部门都可接单。子分类会自动继承此设置。
+                开启后，发布此类型任务时需要输入商品条码并检查库存，库存不足则无法发布任务
               </div>
             </a-form-item>
-            <a-form-item v-if="!isAddingParentType" label="单价分值">
-              <a-input-number
-                v-model:value="formData.taskSubType.unitPrice"
-                :min="0"
-                :step="0.01"
-                :precision="3"
-                style="width: 100%"
-                placeholder="请输入单价分值（如：0.6）"
-              />
-            </a-form-item>
-            <a-form-item label="描述">
-              <a-textarea v-model:value="formData.taskSubType.description" :rows="2" placeholder="请输入描述" />
-            </a-form-item>
-            <a-row :gutter="16">
-              <a-col :span="12">
-                <a-form-item label="排序">
-                  <a-input-number
-                    v-model:value="formData.taskSubType.sortOrder"
-                    :min="0"
-                    :precision="0"
-                    style="width: 100%"
-                    placeholder="值越小越靠前"
-                  />
-                </a-form-item>
-              </a-col>
-              <a-col :span="12">
-                <a-form-item v-if="!isAddingParentType" label="是否检查库存">
-                  <a-switch v-model:checked="formData.taskSubType.checkInventory" />
-                </a-form-item>
-              </a-col>
-            </a-row>
-            <a-alert v-if="!isAddingParentType && formData.taskSubType.checkInventory" type="info" show-icon style="margin-top: 8px;">
-              <template #message>
-                开启后，发布此类型任务时需要输入商品条码并检查库存，库存不足则无法发布任务
-              </template>
-            </a-alert>
           </a-form>
         </a-modal>
 
@@ -1737,8 +1723,7 @@
 <script setup lang="ts">
 import { ref, reactive, onMounted, computed, watch } from 'vue'
 import DefaultLayout from '@/layouts/DefaultLayout.vue'
-import { message, TreeSelect } from 'ant-design-vue'
-const { SHOW_PARENT } = TreeSelect
+import { message } from 'ant-design-vue'
 import Icon from '@/components/Icon.vue'
 import { useRouter } from 'vue-router'
 import { useSiteSettingsStore } from '@/stores/siteSettings'
@@ -1750,7 +1735,6 @@ import {
   getPlatforms, createPlatform, updatePlatform, deletePlatform,
   getCategories, createCategory, updateCategory, deleteCategory,
   getAllTaskSubTypes, createTaskSubType, updateTaskSubType, deleteTaskSubType, toggleTaskSubTypeEnabled,
-  getTaskSubTypeParents,
   type DemandType, type Brand, type Platform, type Category, type TeamScorePool, type TaskSubType
 } from '@/api/config'
 import {
@@ -1864,9 +1848,6 @@ const modals = reactive({
 
 const demandTypes = ref<DemandType[]>([])
 const taskSubTypes = ref<TaskSubType[]>([])
-const taskSubTypeParents = ref<TaskSubType[]>([])  // 需求类型大分类列表
-const taskSubTypeFilter = reactive({ parentId: null as number | null })  // 筛选条件
-const isAddingParentType = ref(false)  // 是否正在添加大分类
 const brands = ref<Brand[]>([])
 const platforms = ref<Platform[]>([])
 const categories = ref<Category[]>([])
@@ -1881,107 +1862,6 @@ const scoreAdjustForm = reactive<ScoreAdjustPayload>({
 })
 const rechargeAmount = ref<number>(0)
 
-// 任务子类型相关计算属性和方法
-const filteredTaskSubTypes = computed(() => {
-  if (!taskSubTypeFilter.parentId) {
-    return taskSubTypes.value
-  }
-  return taskSubTypes.value.filter(t => 
-    t.parentId === taskSubTypeFilter.parentId || t.id === taskSubTypeFilter.parentId
-  )
-})
-
-const taskSubTypeModalTitle = computed(() => {
-  if (editingItem.value) {
-    return editingItem.value.parentId ? '编辑需求类型细分' : '编辑需求类型'
-  }
-  return isAddingParentType.value ? '添加需求类型（大分类）' : '添加需求类型细分'
-})
-
-const getParentName = (parentId: number | null | undefined) => {
-  if (!parentId) return '-'
-  const parent = taskSubTypeParents.value.find(p => p.id === parentId)
-  return parent ? parent.name : '-'
-}
-
-const filterTaskSubTypes = () => {
-  // 筛选器变化时触发重新渲染
-}
-
-// 构建接单部门树形数据（只显示接单部门，带层级标识）
-interface DeptTreeNode {
-  title: string
-  value: number
-  key: number
-  children?: DeptTreeNode[]
-}
-
-const receivingDeptTreeData = computed((): DeptTreeNode[] => {
-  // 只获取接单部门
-  const receivingDepts = departments.value.filter(d => d.deptType === 'receiving')
-  
-  // 构建层级映射
-  const deptMap = new Map<number, DepartmentOverview>()
-  receivingDepts.forEach(d => deptMap.set(d.id!, d))
-  
-  // 找出所有顶级部门（parentId为0或null）
-  const rootDepts = receivingDepts.filter(d => !d.parentId || d.parentId === 0)
-  
-  // 递归构建树
-  const buildTree = (dept: DepartmentOverview, level: number): DeptTreeNode => {
-    const levelPrefix = level === 1 ? '【一级】' : level === 2 ? '【二级】' : level === 3 ? '【三级】' : ''
-    const children = receivingDepts
-      .filter(d => d.parentId === dept.id)
-      .map(child => buildTree(child, level + 1))
-    
-    return {
-      title: `${levelPrefix}${dept.deptName}`,
-      value: dept.id!,
-      key: dept.id!,
-      children: children.length > 0 ? children : undefined
-    }
-  }
-  
-  return rootDepts.map(d => buildTree(d, 1))
-})
-
-// 获取部门及其所有子部门ID
-const getAllChildDeptIds = (deptId: number): number[] => {
-  const result: number[] = [deptId]
-  const children = departments.value.filter(d => d.parentId === deptId)
-  children.forEach(child => {
-    result.push(...getAllChildDeptIds(child.id!))
-  })
-  return result
-}
-
-// 展开选中的部门ID，包含所有子部门
-const expandDeptIdsWithChildren = (deptIds: number[]): number[] => {
-  const allIds = new Set<number>()
-  deptIds.forEach(id => {
-    getAllChildDeptIds(id).forEach(childId => allIds.add(childId))
-  })
-  return Array.from(allIds)
-}
-
-// 获取接单部门名称（用于表格显示）
-const getAllowedDeptNames = (allowedDeptIds: string): string => {
-  if (!allowedDeptIds) return '全部部门'
-  const ids = allowedDeptIds.split(',').map(id => parseInt(id.trim())).filter(id => !isNaN(id))
-  // 只显示顶级选中的部门（非子部门）
-  const topLevelIds = ids.filter(id => {
-    const dept = departments.value.find(d => d.id === id)
-    if (!dept) return false
-    // 如果父部门也在列表中，则不显示此部门
-    return !ids.includes(dept.parentId || 0)
-  })
-  const names = topLevelIds.map(id => {
-    const dept = departments.value.find(d => d.id === id)
-    return dept ? dept.deptName : ''
-  }).filter(n => n)
-  return names.length > 0 ? names.slice(0, 3).join('、') + (names.length > 3 ? '...' : '') : '全部部门'
-}
-
 const userLoading = ref(false)
 const usersLoaded = ref(false)
 const usersByDept = ref<Record<number, User[]>>({})
@@ -2063,7 +1943,7 @@ const defaultDepartmentForm = (): DepartmentForm => ({
 })
 
 const formData = reactive({
-  demandType: {} as Partial<DemandType> & { departmentIds?: number[] },
+  demandType: {} as Partial<DemandType> & { departmentIds?: number[], isSubType?: boolean },
   taskSubType: {} as Partial<TaskSubType>,
   brand: {} as Partial<Brand>,
   platform: {} as Partial<Platform>,
@@ -2182,6 +2062,84 @@ const receivingDepartments = computed(() => {
   return departments.value.filter(dept => dept.deptType === 'receiving')
 })
 
+// 大分类列表（parentId为null的需求类型）
+const parentDemandTypes = computed(() => {
+  return demandTypes.value.filter(dt => !dt.parentId)
+})
+
+// 扁平化的部门选项（带层级显示）
+const flatDepartmentOptions = computed(() => {
+  const receiving = departments.value.filter(dept => dept.deptType === 'receiving')
+  
+  // 按层级分组
+  const level1 = receiving.filter(d => !d.parentId)
+  const groups: { label: string, options: { id: number, displayName: string }[] }[] = []
+  
+  // 添加一级部门组
+  if (level1.length > 0) {
+    groups.push({
+      label: '一级部门',
+      options: level1.map(d => ({ 
+        id: d.id!, 
+        displayName: d.deptName 
+      }))
+    })
+  }
+  
+  // 添加二级部门组
+  const level2 = receiving.filter(d => d.parentId && level1.some(l1 => l1.id === d.parentId))
+  if (level2.length > 0) {
+    groups.push({
+      label: '二级部门',
+      options: level2.map(d => {
+        const parent = level1.find(l1 => l1.id === d.parentId)
+        return { 
+          id: d.id!, 
+          displayName: parent ? `${parent.deptName} / ${d.deptName}` : d.deptName
+        }
+      })
+    })
+  }
+  
+  // 添加三级部门组
+  const level3 = receiving.filter(d => d.parentId && level2.some(l2 => l2.id === d.parentId))
+  if (level3.length > 0) {
+    groups.push({
+      label: '三级部门',
+      options: level3.map(d => {
+        const parent2 = level2.find(l2 => l2.id === d.parentId)
+        const parent1 = parent2 ? level1.find(l1 => l1.id === parent2.parentId) : null
+        const path = [parent1?.deptName, parent2?.deptName, d.deptName].filter(Boolean).join(' / ')
+        return { 
+          id: d.id!, 
+          displayName: path
+        }
+      })
+    })
+  }
+  
+  return groups
+})
+
+// 根据部门ID字符串获取部门名称
+const getDeptNamesFromIds = (idsStr: string) => {
+  if (!idsStr) return ''
+  const ids = idsStr.split(',').map(id => parseInt(id.trim())).filter(id => !isNaN(id))
+  const names = ids.map(id => {
+    const dept = departments.value.find(d => d.id === id)
+    return dept?.deptName || `ID:${id}`
+  })
+  return names.join(', ')
+}
+
+// 获取需求类型弹窗标题
+const getDemandTypeModalTitle = () => {
+  if (editingItem.value) {
+    return formData.demandType.parentId ? '编辑子分类' : '编辑大分类'
+  }
+  return formData.demandType.isSubType ? '添加子分类' : '添加大分类'
+}
+
 const leaderOptions = computed(() =>
   allUsers.value.map((user) => ({
     label: user.realName || user.username || `用户${user.id}`,
@@ -2210,28 +2168,27 @@ const getLimitPeriodLabel = (value?: string) => {
 
 // 表格列定义
 const demandTypeColumns = [
-  { title: 'ID', dataIndex: 'id', key: 'id', width: 80 },
+  { title: 'ID', dataIndex: 'id', key: 'id', width: 60 },
+  { title: '分类', key: 'parentName', width: 100 },
   { title: '类型名称', dataIndex: 'name', key: 'name' },
-  { title: '单价积分', dataIndex: 'unitScore', key: 'unitScore' },
-  { title: '预计时长(h)', dataIndex: 'estimatedHours', key: 'estimatedHours' },
+  { title: '单价分值', dataIndex: 'unitScore', key: 'unitScore', width: 100 },
+  { title: '预计时长(h)', dataIndex: 'estimatedHours', key: 'estimatedHours', width: 110 },
+  { title: '可接单部门', key: 'allowedDepts', ellipsis: true },
+  { title: '排序', dataIndex: 'sortOrder', key: 'sortOrder', width: 60 },
+  { title: '状态', key: 'status', width: 80 },
+  { title: '操作', key: 'actions', width: 200 }
+]
+
+const taskSubTypeColumns = [
+  { title: 'ID', dataIndex: 'id', key: 'id', width: 80 },
+  { title: '子类型名称', dataIndex: 'name', key: 'name' },
+  { title: '子类型编码', dataIndex: 'code', key: 'code' },
   { title: '描述', dataIndex: 'description', key: 'description', ellipsis: true },
   { title: '排序', dataIndex: 'sortOrder', key: 'sortOrder', width: 80 },
   { title: '状态', key: 'status', width: 100 },
   { title: '操作', key: 'actions', width: 150 }
 ]
 
-const taskSubTypeColumns = [
-  { title: 'ID', dataIndex: 'id', key: 'id', width: 50 },
-  { title: '需求类型', key: 'parentName', width: 90 },
-  { title: '需求类型细分', dataIndex: 'name', key: 'name', width: 150 },
-  { title: '单价分值', dataIndex: 'unitPrice', key: 'unitPrice', width: 80 },
-  { title: '可接单部门', key: 'allowedDepts', ellipsis: true },
-  { title: '检查库存', key: 'checkInventory', width: 80 },
-  { title: '排序', dataIndex: 'sortOrder', key: 'sortOrder', width: 60 },
-  { title: '状态', key: 'status', width: 70 },
-  { title: '操作', key: 'actions', width: 120 }
-]
-
 const brandColumns = [
   { title: 'ID', dataIndex: 'id', key: 'id', width: 80 },
   { title: '品牌名称', dataIndex: 'name', key: 'name' },
@@ -2304,13 +2261,8 @@ const loadDemandTypes = async () => {
 const loadTaskSubTypes = async () => {
   loading.taskSubTypes = true
   try {
-    // 同时加载所有子类型和父级分类
-    const [allResponse, parentsResponse] = await Promise.all([
-      getAllTaskSubTypes(),
-      getTaskSubTypeParents()
-    ])
-    taskSubTypes.value = allResponse.data || []
-    taskSubTypeParents.value = parentsResponse.data || []
+    const response = await getAllTaskSubTypes()
+    taskSubTypes.value = response.data || []
   } catch (error: any) {
     console.error('加载任务子类型失败:', error)
     const errorMsg = error?.response?.data?.message || error?.message || '加载任务子类型失败'
@@ -2568,49 +2520,39 @@ const autoGenerateTaskSubTypeCode = () => {
 }
 
 // 显示弹窗
-const showDemandTypeModal = async (item?: DemandType) => {
-  editingItem.value = item
+const showDemandTypeModal = async (item?: DemandType | null, type?: string | null, defaultParentId?: number) => {
+  editingItem.value = item || null
   
   if (item) {
     // 编辑模式：将allowedDeptIds（逗号分隔字符串）转换为数组
     const departmentIds = item.allowedDeptIds 
       ? item.allowedDeptIds.split(',').map(id => parseInt(id.trim())).filter(id => !isNaN(id))
       : []
-    formData.demandType = { ...item, departmentIds }
+    formData.demandType = { 
+      ...item, 
+      departmentIds,
+      isSubType: !!item.parentId 
+    }
   } else {
     // 新建模式
-    formData.demandType = { sortOrder: 0, isEnabled: 1, departmentIds: [] }
+    const isSubType = type === 'sub'
+    formData.demandType = { 
+      sortOrder: 0, 
+      isEnabled: 1, 
+      departmentIds: [],
+      isSubType,
+      parentId: isSubType ? (defaultParentId || null) : null
+    }
   }
   
   modals.demandType = true
 }
 
-const showTaskSubTypeModal = (item?: TaskSubType | null, addParent: boolean = false) => {
+const showTaskSubTypeModal = (item?: TaskSubType) => {
   editingItem.value = item
-  isAddingParentType.value = addParent
-  
-  if (item) {
-    // 编辑模式：将allowedDeptIds（逗号分隔字符串）转换为数组
-    const departmentIds = item.allowedDeptIds 
-      ? item.allowedDeptIds.split(',').map(id => parseInt(id.trim())).filter(id => !isNaN(id))
-      : []
-    formData.taskSubType = { 
-      ...item, 
-      checkInventory: item.checkInventory === 1,
-      unitPrice: item.unitPrice || 0,
-      departmentIds
-    }
-  } else {
-    // 新建模式
-    formData.taskSubType = { 
-      parentId: addParent ? null : undefined,  // 如果是添加大分类，parentId为null
-      sortOrder: 0, 
-      isEnabled: 1, 
-      checkInventory: false,
-      unitPrice: 0,
-      departmentIds: []
-    }
-  }
+  formData.taskSubType = item
+    ? { ...item, checkInventory: item.checkInventory === 1 }
+    : { sortOrder: 0, isEnabled: 1, checkInventory: false }
   modals.taskSubType = true
 }
 
@@ -2678,6 +2620,12 @@ const closeModal = (type: string) => {
 // 保存操作
 const saveDemandType = async () => {
   try {
+    // 子分类必须选择父级
+    if (formData.demandType.isSubType && !formData.demandType.parentId) {
+      message.error('请选择所属大分类')
+      return
+    }
+    
     // 构建保存数据，确保字段名正确
     const saveData: Partial<DemandType> = {
       name: formData.demandType.name,
@@ -2686,8 +2634,10 @@ const saveDemandType = async () => {
       description: formData.demandType.description,
       sortOrder: formData.demandType.sortOrder ?? 0,
       isEnabled: formData.demandType.isEnabled ?? 1,
-      // 将部门ID数组转换为逗号分隔的字符串
-      allowedDeptIds: formData.demandType.departmentIds?.length > 0 
+      // 父级ID（子分类需要设置）
+      parentId: formData.demandType.isSubType ? formData.demandType.parentId : null,
+      // 将部门ID数组转换为逗号分隔的字符串（仅大分类需要设置）
+      allowedDeptIds: !formData.demandType.isSubType && formData.demandType.departmentIds?.length > 0 
         ? formData.demandType.departmentIds.join(',') 
         : null
     }
@@ -2713,26 +2663,13 @@ const saveDemandType = async () => {
 
 const saveTaskSubType = async () => {
   try {
-    // 处理接单部门：只有大分类需要设置，选中的部门会自动展开包含所有子部门
-    const isParentType = isAddingParentType.value || (!formData.taskSubType.parentId && editingItem.value)
-    let allowedDeptIds: string | null = null
-    
-    if (isParentType && formData.taskSubType.departmentIds && formData.taskSubType.departmentIds.length > 0) {
-      // 展开所有选中的部门，包含其子部门
-      const expandedIds = expandDeptIdsWithChildren(formData.taskSubType.departmentIds as number[])
-      allowedDeptIds = expandedIds.join(',')
-    }
-    
-    const saveData: Partial<TaskSubType> & { checkInventory?: number; allowedDeptIds?: string | null } = {
-      parentId: isAddingParentType.value ? null : (formData.taskSubType.parentId || null),
+    const saveData: Partial<TaskSubType> & { checkInventory?: number } = {
       name: formData.taskSubType.name,
       code: formData.taskSubType.code,
       description: formData.taskSubType.description,
-      unitPrice: formData.taskSubType.unitPrice ?? 0,
       sortOrder: formData.taskSubType.sortOrder ?? 0,
       isEnabled: formData.taskSubType.isEnabled ?? 1,
-      checkInventory: isAddingParentType.value ? 0 : ((formData.taskSubType as any).checkInventory ? 1 : 0),
-      allowedDeptIds: isParentType ? allowedDeptIds : undefined  // 只有大分类保存接单部门设置
+      checkInventory: (formData.taskSubType as any).checkInventory ? 1 : 0
     }
     
     if (editingItem.value) {