diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index 81d5a3c..302fd48 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -1118,6 +1118,16 @@ public class TaskItemService {
                 // 通知发送失败不影响主流程
             }
         }
+        
+        // 🔥 更新主任务状态为已审核通过
+        mainTask.setApprovalStatus("approved");
+        mainTask.setStatus("pending");
+        mainTask.setReceivingApprovalTime(LocalDateTime.now());
+        mainTask.setCurrentApproverId(null);
+        mainTask.setCurrentApproverRole(null);
+        mainTask.setUpdateTime(LocalDateTime.now());
+        taskMapper.updateById(mainTask);
+        log.info("主任务 {} 接单部门审核通过，状态更新为 approved/pending", taskId);
     }
 
     /**