diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index 46554b0..aa24c58 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -37,6 +37,7 @@ public class TaskItemService {
     private final ConfigService configService;
     private final ExternalAssetService externalAssetService;
     private final SystemConfigService systemConfigService;
+    private final com.designhub.mapper.TaskTypeMapper taskTypeMapper;
 
     /**
      * 获取可接单的子任务列表
@@ -504,27 +505,38 @@ public class TaskItemService {
                     result.put("unlockedCount", nextGroupItems.size());
 
                     // 发送通知给接单部门负责人
-                    if (mainTask.getReceiverDeptId() != null) {
-                        com.designhub.entity.Department receiverDept = departmentMapper.selectById(mainTask.getReceiverDeptId());
-                        if (receiverDept != null && receiverDept.getLeaderId() != null) {
-                            Notification notification = new Notification();
-                            notification.setReceiverId(receiverDept.getLeaderId());
-                            notification.setNotificationType("task_approval");
-                            notification.setTitle("新子任务组待审核");
-                            notification.setContent("任务《" + mainTask.getTitle() + "》第 " + nextGroupNo + " 组共 " + 
-                                nextGroupItems.size() + " 个子任务已解锁，请审核并分配！");
-                            notification.setRelatedId(item.getTaskId());
-                            notification.setRelatedType("task");
-                            notification.setPriority(2); // 重要
-                            notification.setPushDingtalk(1); // 推送到钉钉
-                            notificationService.sendNotification(notification);
-                            
-                            log.info("已通知接单部门负责人（ID: {}）审核第 {} 组子任务", 
-                                receiverDept.getLeaderId(), nextGroupNo);
+                    // 从子任务的任务类型配置中获取allowed_dept_ids
+                    Set<Long> notifiedLeaderIds = new java.util.HashSet<>();
+                    for (TaskItem nextItem : nextGroupItems) {
+                        Long targetDeptId = getTargetDeptIdFromTaskType(nextItem.getTaskTypeId());
+                        if (targetDeptId != null) {
+                            com.designhub.entity.Department receiverDept = departmentMapper.selectById(targetDeptId);
+                            if (receiverDept != null && receiverDept.getLeaderId() != null 
+                                && !notifiedLeaderIds.contains(receiverDept.getLeaderId())) {
+                                notifiedLeaderIds.add(receiverDept.getLeaderId());
+                                
+                                Notification notification = new Notification();
+                                notification.setReceiverId(receiverDept.getLeaderId());
+                                notification.setNotificationType("task_approval");
+                                notification.setTitle("新子任务组待审核");
+                                notification.setContent("任务《" + mainTask.getTitle() + "》第 " + nextGroupNo + " 组共 " + 
+                                    nextGroupItems.size() + " 个子任务已解锁，请审核并分配！");
+                                notification.setRelatedId(item.getTaskId());
+                                notification.setRelatedType("task");
+                                notification.setPriority(2); // 重要
+                                notification.setPushDingtalk(1); // 推送到钉钉
+                                notificationService.sendNotification(notification);
+                                
+                                log.info("已通知接单部门负责人（部门: {}, 负责人ID: {}）审核第 {} 组子任务", 
+                                    receiverDept.getDeptName(), receiverDept.getLeaderId(), nextGroupNo);
+                            }
+                        } else {
+                            log.warn("子任务 {} 的任务类型未配置接单部门", nextItem.getItemNo());
                         }
                     }
                     
-                    log.info("第 {} 组 {} 个子任务已解锁，等待接单部门负责人审核", nextGroupNo, nextGroupItems.size());
+                    log.info("第 {} 组 {} 个子任务已解锁，等待接单部门负责人审核，已通知 {} 个部门负责人", 
+                        nextGroupNo, nextGroupItems.size(), notifiedLeaderIds.size());
                 } else {
                     log.info("没有更多子任务组需要解锁");
                 }
@@ -998,4 +1010,39 @@ public class TaskItemService {
 
         return new java.util.ArrayList<>(groupMap.values());
     }
+    
+    /**
+     * 从任务类型配置中获取目标接单部门ID
+     * 如果当前类型未配置，则递归向上查找父级类型的配置
+     */
+    private Long getTargetDeptIdFromTaskType(Long taskTypeId) {
+        if (taskTypeId == null) {
+            return null;
+        }
+        
+        com.designhub.entity.TaskType taskType = taskTypeMapper.selectById(taskTypeId);
+        if (taskType == null) {
+            return null;
+        }
+        
+        // 如果当前类型配置了allowed_dept_ids，返回第一个部门ID
+        String allowedDeptIds = taskType.getAllowedDeptIds();
+        if (allowedDeptIds != null && !allowedDeptIds.isEmpty()) {
+            try {
+                String[] deptIds = allowedDeptIds.split(",");
+                if (deptIds.length > 0) {
+                    return Long.parseLong(deptIds[0].trim());
+                }
+            } catch (NumberFormatException e) {
+                log.warn("解析allowed_dept_ids失败: {}", allowedDeptIds, e);
+            }
+        }
+        
+        // 如果当前类型未配置，递归查找父级
+        if (taskType.getParentId() != null) {
+            return getTargetDeptIdFromTaskType(taskType.getParentId());
+        }
+        
+        return null;
+    }
 }