diff --git a/backend/src/main/java/com/designhub/service/TaskApprovalService.java b/backend/src/main/java/com/designhub/service/TaskApprovalService.java
index 327f107..2a5b290 100644
--- a/backend/src/main/java/com/designhub/service/TaskApprovalService.java
+++ b/backend/src/main/java/com/designhub/service/TaskApprovalService.java
@@ -446,16 +446,29 @@ public class TaskApprovalService {
 
         logApproval(taskId, approverId, 2, "reject", reason);
 
-        // 通知需求部门负责人
+        // 1. 通知任务发起人
         notificationService.sendNotification(
-            demandDept.getLeaderId(),
+            task.getPublisherId(),
             "任务已被驳回",
-            String.format("任务【%s】被接单部门负责人驳回，原因：%s", task.getTitle(), reason),
+            String.format("您的任务【%s】被接单部门负责人驳回，原因：%s，请修改后重新提交", task.getTitle(), reason),
             "task_reject",
             taskId
         );
+        log.info("已通知任务发起人: publisherId={}", task.getPublisherId());
         
-        // 如果任务有指定的处理人，发送群通知告知驳回
+        // 2. 如果需求部门负责人不是发起人，也通知需求部门负责人
+        if (!demandDept.getLeaderId().equals(task.getPublisherId())) {
+            notificationService.sendNotification(
+                demandDept.getLeaderId(),
+                "任务已被驳回",
+                String.format("任务【%s】被接单部门负责人驳回，原因：%s", task.getTitle(), reason),
+                "task_reject",
+                taskId
+            );
+            log.info("已通知需求部门负责人: leaderId={}", demandDept.getLeaderId());
+        }
+        
+        // 3. 如果任务有指定的处理人，发送群通知告知驳回
         if (task.getReceiverId() != null) {
             try {
                 com.designhub.entity.User receiver = userMapper.selectById(task.getReceiverId());