diff --git a/backend/src/main/java/com/designhub/controller/TaskItemController.java b/backend/src/main/java/com/designhub/controller/TaskItemController.java
index 9d53df7..347091e 100644
--- a/backend/src/main/java/com/designhub/controller/TaskItemController.java
+++ b/backend/src/main/java/com/designhub/controller/TaskItemController.java
@@ -299,15 +299,33 @@ public class TaskItemController {
             return Result.success(groups);
         }
         
-        // 如果没有提供部门ID，从用户信息中获取
-        if (deptId == null) {
-            if (user == null || user.getDeptId() == null) {
-                return Result.success(new java.util.ArrayList<>());
-            }
-            deptId = user.getDeptId();
+        // 查找用户作为负责人的所有部门
+        List<com.designhub.entity.Department> leadingDepts = departmentMapper.selectList(
+            new com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper<com.designhub.entity.Department>()
+                .eq(com.designhub.entity.Department::getLeaderId, userId)
+                .eq(com.designhub.entity.Department::getStatus, 1)
+        );
+        
+        if (leadingDepts.isEmpty()) {
+            // 不是任何部门的负责人，返回空列表
+            return Result.success(new java.util.ArrayList<>());
         }
         
-        List<Map<String, Object>> groups = taskItemService.getPendingApprovalGroups(deptId);
-        return Result.success(groups);
+        // 合并所有负责部门的待审核子任务组
+        List<Map<String, Object>> allGroups = new java.util.ArrayList<>();
+        java.util.Set<String> addedKeys = new java.util.HashSet<>();
+        
+        for (com.designhub.entity.Department dept : leadingDepts) {
+            List<Map<String, Object>> groups = taskItemService.getPendingApprovalGroups(dept.getId());
+            for (Map<String, Object> group : groups) {
+                String key = group.get("taskId") + "-" + group.get("groupNo");
+                if (!addedKeys.contains(key)) {
+                    addedKeys.add(key);
+                    allGroups.add(group);
+                }
+            }
+        }
+        
+        return Result.success(allGroups);
     }
 }