diff --git a/backend/app/service/BusinessTripService.php b/backend/app/service/BusinessTripService.php
index 9e951d8..138fe70 100644
--- a/backend/app/service/BusinessTripService.php
+++ b/backend/app/service/BusinessTripService.php
@@ -310,12 +310,13 @@ class BusinessTripService
                     $notificationService->setAppByUser($approverId)
                         ->sendApprovalNotification([
                             'user_id' => $approverId,
+                            'applicant_id' => $approvalOrder->applicant_id,  // 添加申请人ID用于自审批检测
                             'title' => '新的出差审批申请',
                             'applicant' => $businessTrip->user->name,
                             'type' => '出差申请',
                             'content' => $content,
                             'url' => $approvalUrl,
-                            'order_id' => $approvalOrder->id,  // 添加 order_id 以显示审批按钮
+                            'order_id' => $approvalOrder->id,
                         ]);
                     error_log("✅ 审批人通知成功: approver_id={$approverId}");
                 } catch (\Exception $e) {