diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index 69f9f53..c224908 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -205,11 +205,11 @@ public class TaskItemService {
                 throw new BusinessException(ResultCode.FORBIDDEN, "部门负责人不能接单，请分配给设计师");
             }
 
-            // 检查4：验证部门是否允许接该任务类型（支持三级分类继承二级分类的配置）
+            // 检查4：验证部门是否允许接该任务类型（支持三级分类继承二级分类的配置，支持子部门继承父部门权限）
             if (item.getTaskTypeId() != null) {
                 com.designhub.entity.DemandType demandType = configService.getDemandTypeById(item.getTaskTypeId());
                 if (demandType != null) {
-                    // 获取允许的部门ID（支持继承）
+                    // 获取允许的部门ID（支持任务类型继承）
                     String allowedDeptIds = demandType.getAllowedDeptIds();
                     if ((allowedDeptIds == null || allowedDeptIds.isEmpty()) && demandType.getParentId() != null) {
                         // 三级分类没有配置，尝试获取父级（二级分类）的配置
@@ -220,17 +220,36 @@ public class TaskItemService {
                     }
                     
                     if (allowedDeptIds != null && !allowedDeptIds.isEmpty()) {
-                    // 检查用户部门是否在允许列表中
+                        // 检查用户部门或其父部门是否在允许列表中（子部门继承父部门权限）
                         String[] allowedIds = allowedDeptIds.split(",");
-                    boolean isAllowed = false;
-                    for (String allowedId : allowedIds) {
-                        if (allowedId.trim().equals(String.valueOf(user.getDeptId()))) {
-                            isAllowed = true;
-                            break;
+                        Set<Long> allowedDeptIdSet = new HashSet<>();
+                        for (String allowedId : allowedIds) {
+                            try {
+                                allowedDeptIdSet.add(Long.parseLong(allowedId.trim()));
+                            } catch (NumberFormatException e) {
+                                log.warn("解析允许部门ID失败: {}", allowedId);
+                            }
                         }
-                    }
-                    if (!isAllowed) {
-                        throw new BusinessException(ResultCode.FORBIDDEN, "您的部门无权接收此类型的任务");
+                        
+                        // 获取用户部门及其所有父部门ID
+                        boolean isAllowed = false;
+                        Long currentDeptId = user.getDeptId();
+                        while (currentDeptId != null) {
+                            if (allowedDeptIdSet.contains(currentDeptId)) {
+                                isAllowed = true;
+                                break;
+                            }
+                            // 向上查找父部门
+                            com.designhub.entity.Department currentDept = departmentMapper.selectById(currentDeptId);
+                            if (currentDept != null && currentDept.getParentId() != null) {
+                                currentDeptId = currentDept.getParentId();
+                            } else {
+                                break;
+                            }
+                        }
+                        
+                        if (!isAllowed) {
+                            throw new BusinessException(ResultCode.FORBIDDEN, "您的部门无权接收此类型的任务");
                         }
                     }
                 }