diff --git a/backend/src/main/java/com/designhub/controller/TaskItemController.java b/backend/src/main/java/com/designhub/controller/TaskItemController.java
index ab0de6e..b94ffc4 100644
--- a/backend/src/main/java/com/designhub/controller/TaskItemController.java
+++ b/backend/src/main/java/com/designhub/controller/TaskItemController.java
@@ -57,9 +57,13 @@ public class TaskItemController {
             @Parameter(description = "搜索关键词") @RequestParam(required = false) String keyword,
             @Parameter(description = "筛选可接单部门ID") @RequestParam(required = false) Long filterDeptId,
             @Parameter(description = "排序方式: oldest(最早优先)/latest(最新优先，默认)") @RequestParam(defaultValue = "latest") String sortBy,
-            @Parameter(description = "是否包含排队中的任务") @RequestParam(defaultValue = "true") Boolean includeQueuing) {
+            @Parameter(description = "是否包含排队中的任务") @RequestParam(defaultValue = "true") Boolean includeQueuing,
+            @Parameter(description = "品牌ID") @RequestParam(required = false) Long brandId,
+            @Parameter(description = "类目ID") @RequestParam(required = false) Long categoryId,
+            @Parameter(description = "平台ID") @RequestParam(required = false) Long platformId,
+            @Parameter(description = "需求类型") @RequestParam(required = false) String taskSubType) {
         
-        IPage<TaskItem> items = taskItemService.getAvailableItems(page, pageSize, taskTypeId, keyword, filterDeptId, sortBy, includeQueuing);
+        IPage<TaskItem> items = taskItemService.getAvailableItems(page, pageSize, taskTypeId, keyword, filterDeptId, sortBy, includeQueuing, brandId, categoryId, platformId, taskSubType);
         return Result.success(items);
     }
 
diff --git a/backend/src/main/java/com/designhub/mapper/TaskItemMapper.java b/backend/src/main/java/com/designhub/mapper/TaskItemMapper.java
index 60229ba..b230c8d 100644
--- a/backend/src/main/java/com/designhub/mapper/TaskItemMapper.java
+++ b/backend/src/main/java/com/designhub/mapper/TaskItemMapper.java
@@ -141,6 +141,79 @@ public interface TaskItemMapper extends BaseMapper<TaskItem> {
                                                      @Param("keyword") String keyword,
                                                      @Param("allowedTaskTypeIds") List<Long> allowedTaskTypeIds);
 
+    /**
+     * 查询可接单的子任务列表（完整筛选版本，支持品牌、类目、平台等筛选）
+     */
+    @Select("<script>" +
+            "SELECT ti.*, " +
+            "  t.title AS mainTaskTitle, " +
+            "  t.pipeline_mode AS pipelineMode, " +
+            "  t.brand_id, " +
+            "  t.category_id, " +
+            "  t.platform_id, " +
+            "  t.spu_info AS spuInfo, " +
+            "  t.task_sub_type AS taskSubType, " +
+            "  t.attachment_url AS attachmentUrl, " +
+            "  t.preview_image AS previewImage, " +
+            "  t.is_primary_task AS isPrimaryTask, " +
+            "  u.real_name AS publisherName, " +
+            "  pp.real_name AS primaryPublisherName, " +
+            "  ppd.dept_name AS primaryPublisherDeptName, " +
+            "  dc.real_name AS detailCompleterName, " +
+            "  b.brand_name AS brandName, " +
+            "  c.category_name AS categoryName, " +
+            "  p.platform_name AS platformName, " +
+            "  dt.type_name AS taskTypeName, " +
+            "  (SELECT COUNT(*) FROM task_item WHERE task_id = ti.task_id) AS totalItems " +
+            "FROM task_item ti " +
+            "LEFT JOIN task t ON ti.task_id = t.id " +
+            "LEFT JOIN sys_user u ON t.publisher_id = u.id " +
+            "LEFT JOIN sys_user pp ON t.primary_publisher_id = pp.id " +
+            "LEFT JOIN sys_dept ppd ON t.primary_publisher_dept_id = ppd.id " +
+            "LEFT JOIN sys_user dc ON t.detail_completer_id = dc.id " +
+            "LEFT JOIN brand b ON t.brand_id = b.id " +
+            "LEFT JOIN category c ON t.category_id = c.id " +
+            "LEFT JOIN platform p ON t.platform_id = p.id " +
+            "LEFT JOIN task_type dt ON ti.task_type_id = dt.id " +
+            "WHERE ti.status = 'pending' AND ti.is_locked = 0 AND t.deleted = 0 AND t.approval_status = 'approved' " +
+            "<if test='taskTypeId != null'> AND ti.task_type_id = #{taskTypeId}</if> " +
+            "<if test='brandId != null'> AND t.brand_id = #{brandId}</if> " +
+            "<if test='categoryId != null'> AND t.category_id = #{categoryId}</if> " +
+            "<if test='platformId != null'> AND t.platform_id = #{platformId}</if> " +
+            "<if test='taskSubType != null and taskSubType != \"\"'> AND t.task_sub_type = #{taskSubType}</if> " +
+            "<if test='keyword != null and keyword != \"\"'> " +
+            "  AND (t.title LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR t.task_no LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR ti.item_no LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR t.spu_info LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(t.remark, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(t.product_barcodes, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR u.real_name LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(pp.real_name, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(ppd.dept_name, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(dc.real_name, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(b.brand_name, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(c.category_name, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(p.platform_name, '') LIKE CONCAT('%', #{keyword}, '%') " +
+            "    OR COALESCE(dt.type_name, '') LIKE CONCAT('%', #{keyword}, '%'))" +
+            "</if> " +
+            "<if test='allowedTaskTypeIds != null and allowedTaskTypeIds.size() > 0'> " +
+            "  AND ti.task_type_id IN " +
+            "  <foreach collection='allowedTaskTypeIds' item='typeId' open='(' separator=',' close=')'>" +
+            "    #{typeId}" +
+            "  </foreach> " +
+            "</if> " +
+            "ORDER BY ti.create_time DESC" +
+            "</script>")
+    IPage<TaskItem> selectAvailableItemsWithFilters(Page<TaskItem> page,
+                                                     @Param("taskTypeId") Long taskTypeId,
+                                                     @Param("keyword") String keyword,
+                                                     @Param("brandId") Long brandId,
+                                                     @Param("categoryId") Long categoryId,
+                                                     @Param("platformId") Long platformId,
+                                                     @Param("taskSubType") String taskSubType,
+                                                     @Param("allowedTaskTypeIds") List<Long> allowedTaskTypeIds);
+
     /**
      * 查询进行中的子任务列表
      * @param receiverId 接单人ID，null表示不按接单人过滤
diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index dc35696..b438ea3 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -73,12 +73,28 @@ public class TaskItemService {
      */
     public IPage<TaskItem> getAvailableItems(Integer page, Integer pageSize, Long taskTypeId, String keyword, 
                                              Long filterDeptId, String sortBy, Boolean includeQueuing) {
+        return getAvailableItems(page, pageSize, taskTypeId, keyword, filterDeptId, sortBy, includeQueuing, null, null, null, null);
+    }
+    
+    /**
+     * 获取可接单的子任务列表（完整版，支持所有筛选条件）
+     * @param filterDeptId 筛选可接单部门ID（可选）
+     * @param sortBy 排序方式：oldest(最早优先) / latest(最新优先，默认)
+     * @param includeQueuing 是否包含排队中的任务
+     * @param brandId 品牌ID筛选
+     * @param categoryId 类目ID筛选
+     * @param platformId 平台ID筛选
+     * @param taskSubType 需求类型筛选
+     */
+    public IPage<TaskItem> getAvailableItems(Integer page, Integer pageSize, Long taskTypeId, String keyword, 
+                                             Long filterDeptId, String sortBy, Boolean includeQueuing,
+                                             Long brandId, Long categoryId, Long platformId, String taskSubType) {
         Page<TaskItem> pageParam = new Page<>(page, pageSize);
         IPage<TaskItem> result;
         
         // 如果没有指定筛选部门，直接查询
         if (filterDeptId == null) {
-            result = taskItemMapper.selectAvailableItems(pageParam, taskTypeId, keyword);
+            result = taskItemMapper.selectAvailableItemsWithFilters(pageParam, taskTypeId, keyword, brandId, categoryId, platformId, taskSubType, null);
         } else {
             // 🔥 获取筛选部门及其所有子部门的ID列表
             Set<Long> filterDeptAndChildIds = getDeptAndChildIds(filterDeptId);
@@ -127,7 +143,7 @@ public class TaskItemService {
             }
             
             // 查询并筛选
-            result = taskItemMapper.selectAvailableItemsByTaskTypes(pageParam, taskTypeId, keyword, filterDeptAllowedTypeIds);
+            result = taskItemMapper.selectAvailableItemsWithFilters(pageParam, taskTypeId, keyword, brandId, categoryId, platformId, taskSubType, filterDeptAllowedTypeIds);
         }
         
         // 🔥 填充排队状态信息
diff --git a/frontend/src/api/task.ts b/frontend/src/api/task.ts
index 19270eb..53c23ba 100644
--- a/frontend/src/api/task.ts
+++ b/frontend/src/api/task.ts
@@ -418,6 +418,12 @@ export const getAvailableTaskItems = (params: {
   pageSize?: number
   taskTypeId?: number
   keyword?: string
+  brandId?: number
+  categoryId?: number
+  platformId?: number
+  taskSubType?: string
+  filterDeptId?: number
+  sortBy?: string
 }) => {
   return request.get<any>('/tasks/items/available', { params })
 }