diff --git a/src/main/java/com/chint/interfaces/rest/ly/in/TrainBackController.java b/src/main/java/com/chint/interfaces/rest/ly/in/TrainBackController.java
index 17f33b94..e71b9925 100644
--- a/src/main/java/com/chint/interfaces/rest/ly/in/TrainBackController.java
+++ b/src/main/java/com/chint/interfaces/rest/ly/in/TrainBackController.java
@@ -32,7 +32,7 @@ public class TrainBackController {
 
     @PostMapping("/back")
     public LYNoteResponse trainBack(@RequestBody NotificationTrain notificationTrain) {
-        String orderSerialNo = notificationTrain.getNotifyData().getOrderSerialNo();
+        String orderSerialNo = notificationTrain.getNotifyData().getOrderNo();
         if (orderSerialNo != null) {
             TrainDetailResponse trainOrderDetail = lySearchRequest.getTrainOrderDetail(orderSerialNo);
             String outEmployeeId = trainOrderDetail.getData().getOutEmployeeId();//外部员工id