diff --git a/src/main/java/com/sczx/order/po/OrderMainPO.java b/src/main/java/com/sczx/order/po/OrderMainPO.java
index ff07825..83b049d 100644
--- a/src/main/java/com/sczx/order/po/OrderMainPO.java
+++ b/src/main/java/com/sczx/order/po/OrderMainPO.java
@@ -105,11 +105,12 @@ public class OrderMainPO implements Serializable {
     @ApiModelProperty("申请还车时间")
     private LocalDateTime reqEndRentTime;
 
-
-
     @ApiModelProperty("实际还车时间")
     private LocalDateTime actEndRentTime;
 
+    @ApiModelProperty("租赁时长")
+    private Integer rentalDuration;
+
     @ApiModelProperty("逾期天数")
     private Integer overdueDays;
 
diff --git a/src/main/java/com/sczx/order/service/impl/OrderServiceImpl.java b/src/main/java/com/sczx/order/service/impl/OrderServiceImpl.java
index 1588d9b..7132d9c 100644
--- a/src/main/java/com/sczx/order/service/impl/OrderServiceImpl.java
+++ b/src/main/java/com/sczx/order/service/impl/OrderServiceImpl.java
@@ -1280,15 +1280,19 @@ public class OrderServiceImpl implements OrderService {
     @Transactional(rollbackFor = Exception.class)
     @Override
     public OrderDTO confirmReturnCar(ReturnCarReq returnCarReq) {
+        OrderDTO orderDTO = getOrderInfoByOrderNo(returnCarReq.getOrderNo());
+        Integer rentalDuration = OrderUtil.getDuration(orderDTO.getFirstOrderTime(),LocalDateTime.now(),orderDTO.getRentalType());
+
         //变更订单状态，记录还车时间
         LambdaUpdateWrapper<OrderMainPO> updateWrapper = new LambdaUpdateWrapper<>();
         updateWrapper.set(OrderMainPO::getOrderStatus, OrderStatusEnum.AUTO_END.getCode());
         updateWrapper.set(OrderMainPO::getActEndRentTime, LocalDateTime.now());
         updateWrapper.set(Objects.nonNull(returnCarReq.getDamageAmount()),OrderMainPO::getDamageAmount, returnCarReq.getDamageAmount());
         updateWrapper.set(StringUtils.isNotBlank(returnCarReq.getDamageDesc()),OrderMainPO::getDamageDesc, returnCarReq.getDamageDesc());
+        updateWrapper.set(rentalDuration != null,OrderMainPO::getRentalDuration, rentalDuration);
         updateWrapper.eq(OrderMainPO::getOrderNo, returnCarReq.getOrderNo());
         orderMainRepo.update(updateWrapper);
-        OrderDTO orderDTO = getOrderInfoByOrderNo(returnCarReq.getOrderNo());
+//        OrderDTO orderDTO = getOrderInfoByOrderNo(returnCarReq.getOrderNo());
         if(!CollectionUtils.isEmpty(returnCarReq.getImageList())){
             //添加车辆图片
             List<OrderCarImgPO> carImagePOList = new ArrayList<>();
diff --git a/src/main/java/com/sczx/order/utils/OrderUtil.java b/src/main/java/com/sczx/order/utils/OrderUtil.java
index a050e90..1fd3592 100644
--- a/src/main/java/com/sczx/order/utils/OrderUtil.java
+++ b/src/main/java/com/sczx/order/utils/OrderUtil.java
@@ -98,6 +98,26 @@ public class OrderUtil {
         return 0;
     }
 
+    /**
+     * 计算间隔时间
+     * @param startTime
+     * @param endTime
+     * @param rentalType
+     * @return
+     */
+    public static Integer getDuration(LocalDateTime startTime,LocalDateTime endTime,String rentalType) {
+        if(startTime!=null&&endTime!=null){
+            if(startTime.isBefore(endTime)){
+                if(StringUtils.equalsIgnoreCase(rentalType, RentCarTypeEnum.HOUR_RENTAL.getCode())){
+                    return (int) ChronoUnit.HOURS.between(startTime, endTime);
+                } else {
+                    return (int) ChronoUnit.DAYS.between(startTime, endTime);
+                }
+            }
+        }
+        return 0;
+    }
+
 
     /**
      * 计算订单逾期金额