diff --git a/app/Http/Controllers/Manager/OrdersController.php b/app/Http/Controllers/Manager/OrdersController.php
index 628f799..24737f7 100644
--- a/app/Http/Controllers/Manager/OrdersController.php
+++ b/app/Http/Controllers/Manager/OrdersController.php
@@ -1669,6 +1669,13 @@ class OrdersController extends CommonController
 
             //更新用户余额，创建流水记录
             $customer_balance = $refund->customer->balance - $refund->money;
+            if ($customer_balance < 0) {
+                return response()->json([
+                    "errorcode" => "0",
+                    "errormsg" => "客户余额为负异常，存在重复退款操作。"
+                ]);
+            }
+
             $refund->customer->update([
                 "balance" => $customer_balance
             ]);