diff --git a/smart-admin-service/smart-admin-api/src/main/java/net/lab1024/smartadmin/module/system/royalcanin/good/service/OrderService.java b/smart-admin-service/smart-admin-api/src/main/java/net/lab1024/smartadmin/module/system/royalcanin/good/service/OrderService.java
index 72d712ae..1880d840 100644
--- a/smart-admin-service/smart-admin-api/src/main/java/net/lab1024/smartadmin/module/system/royalcanin/good/service/OrderService.java
+++ b/smart-admin-service/smart-admin-api/src/main/java/net/lab1024/smartadmin/module/system/royalcanin/good/service/OrderService.java
@@ -284,7 +284,7 @@ public class OrderService {
                 endTotal = total * buyCount - discount;
                 break;
             case "3":
-                endTotal = (total * buyCount) * discount;
+                endTotal = (total * buyCount) * (1-discount);
                 break;
             case "1" :
                 endTotal = total * buyCount - discount;