diff --git a/litemall-db/src/main/java/org/linlinjava/litemall/db/service/LitemallOrderService.java b/litemall-db/src/main/java/org/linlinjava/litemall/db/service/LitemallOrderService.java
index 0cd4b9ca..6a1fe33a 100644
--- a/litemall-db/src/main/java/org/linlinjava/litemall/db/service/LitemallOrderService.java
+++ b/litemall-db/src/main/java/org/linlinjava/litemall/db/service/LitemallOrderService.java
@@ -64,7 +64,7 @@ public class LitemallOrderService {
         String now = df.format(LocalDate.now());
         String orderSn = now + getRandomNum(6);
         while (countByOrderSn(userId, orderSn) != 0) {
-            orderSn = getRandomNum(6);
+            orderSn = now + getRandomNum(6);
         }
         return orderSn;
     }