diff --git a/src/0-core/HuanMeng.MiaoYu.Code/Payment/PaymentExtend.cs b/src/0-core/HuanMeng.MiaoYu.Code/Payment/PaymentExtend.cs
index 044c92d..0dd2735 100644
--- a/src/0-core/HuanMeng.MiaoYu.Code/Payment/PaymentExtend.cs
+++ b/src/0-core/HuanMeng.MiaoYu.Code/Payment/PaymentExtend.cs
@@ -241,6 +241,7 @@ namespace HuanMeng.MiaoYu.Code.Payment
 
             // 通过索引位置缓存各个部分的起始位置
             int tIndex = customString.IndexOf('T');
+            
             int uIndex = customString.IndexOf('U');
             int pIndex = customString.IndexOf('P');
             int mIndex = customString.IndexOf('M');
diff --git a/src/0-core/HuanMeng.MiaoYu.Code/Payment/WeChat/WeChatMiniProgram.cs b/src/0-core/HuanMeng.MiaoYu.Code/Payment/WeChat/WeChatMiniProgram.cs
index b8b208e..0ee2e94 100644
--- a/src/0-core/HuanMeng.MiaoYu.Code/Payment/WeChat/WeChatMiniProgram.cs
+++ b/src/0-core/HuanMeng.MiaoYu.Code/Payment/WeChat/WeChatMiniProgram.cs
@@ -25,7 +25,7 @@ namespace HuanMeng.MiaoYu.Code.Payment.WeChat
         public async Task<(string orderId, string order)> CreateOrder(int productId, string productName, decimal price, params object[] args)
         {
             //var orderId = GenerateTimestampIdWithOffset();
-            var orderId = PaymentExtend.GenerateCustomString("WMP", userId, productId, "002");
+            var orderId = PaymentExtend.GenerateCustomString("XCX", userId, productId, "002");
             //var client = new WechatTenpayClient(wechatTenpayClientOptions);
             /* 以 JSAPI 统一下单接口为例 */
             string sign = $"{tenantInfo.Identifier}{orderId}{userId}";