diff --git a/src/main/java/com/chint/domain/aggregates/order/OrderDetail.java b/src/main/java/com/chint/domain/aggregates/order/OrderDetail.java
index 6b278a0e..db0c29c0 100644
--- a/src/main/java/com/chint/domain/aggregates/order/OrderDetail.java
+++ b/src/main/java/com/chint/domain/aggregates/order/OrderDetail.java
@@ -209,28 +209,48 @@ public class OrderDetail implements Serializable {
         return this;
     }
 
-    public OrderDetail deepClone(){
+    public OrderDetail deepClone() {
         OrderDetail copyOrderDetail = BeanUtil.copyProperties(this, OrderDetail.class);
-        HotelOrderDetail copiedHotelOrderDetail = BeanUtil.copyProperties(this.hotelOrderDetail, HotelOrderDetail.class);
-        copyOrderDetail.setHotelOrderDetail(copiedHotelOrderDetail);
+        if (this.hotelOrderDetail != null) {
+            HotelOrderDetail copiedHotelOrderDetail = BeanUtil.copyProperties(this.hotelOrderDetail, HotelOrderDetail.class);
+            copyOrderDetail.setHotelOrderDetail(copiedHotelOrderDetail);
+        } else {
+            copyOrderDetail.setHotelOrderDetail(null);
+        }
+
         // 深拷贝 carOrderDetail
-        CarOrderDetail copiedCarOrderDetail = BeanUtil.copyProperties(this.carOrderDetail, CarOrderDetail.class);
-        copyOrderDetail.setCarOrderDetail(copiedCarOrderDetail);
+        if (this.carOrderDetail != null) {
+            CarOrderDetail copiedCarOrderDetail = BeanUtil.copyProperties(this.carOrderDetail, CarOrderDetail.class);
+            copyOrderDetail.setCarOrderDetail(copiedCarOrderDetail);
+        } else {
+            copyOrderDetail.setCarOrderDetail(null);
+        }
+
 
         // 深拷贝 flightOrderDetail
-        FlightOrderDetail copiedFlightOrderDetail = BeanUtil.copyProperties(this.flightOrderDetail, FlightOrderDetail.class);
-        copyOrderDetail.setFlightOrderDetail(copiedFlightOrderDetail);
+        if (this.flightOrderDetail != null) {
+            FlightOrderDetail copiedFlightOrderDetail = BeanUtil.copyProperties(this.flightOrderDetail, FlightOrderDetail.class);
+            copyOrderDetail.setFlightOrderDetail(copiedFlightOrderDetail);
+        } else {
+            copyOrderDetail.setFlightOrderDetail(null);
+        }
+
 
         // 深拷贝 trainOrderDetail
-        TrainOrderDetail copiedTrainOrderDetail = BeanUtil.copyProperties(this.trainOrderDetail, TrainOrderDetail.class);
-        copyOrderDetail.setTrainOrderDetail(copiedTrainOrderDetail);
+        if (this.trainOrderDetail != null) {
+            TrainOrderDetail copiedTrainOrderDetail = BeanUtil.copyProperties(this.trainOrderDetail, TrainOrderDetail.class);
+            copyOrderDetail.setTrainOrderDetail(copiedTrainOrderDetail);
+        } else {
+            copyOrderDetail.setTrainOrderDetail(null);
+        }
+
 
         // 深拷贝 otherOrderDetail
         //OtherOrderDetail copiedOtherOrderDetail = BeanUtil.copyProperties(this.otherOrderDetail, OtherOrderDetail.class);
         copyOrderDetail.setOtherOrderDetail(null);
 
         // 深拷贝 orderEventList
-        if(this.orderEventList != null && !this.orderEventList.isEmpty()) {
+        if (this.orderEventList != null && !this.orderEventList.isEmpty()) {
             List<OrderEvent> copiedOrderEventList = this.orderEventList.stream()
                     .map(event -> BeanUtil.copyProperties(event, OrderEvent.class))
                     .collect(Collectors.toList());