diff --git a/app/main/api/internal/service/payService.go b/app/main/api/internal/service/payService.go
index bb295e0..194d5cc 100644
--- a/app/main/api/internal/service/payService.go
+++ b/app/main/api/internal/service/payService.go
@@ -134,6 +134,7 @@ func (p *PayService) CreateOrder(ctx context.Context, req *CreateOrderRequest) (
 			if err != nil {
 				return fmt.Errorf("创建支付宝订单失败: %v", err)
 			}
+			outTradeNo = resp.OrderNo
 			payData = resp.PayParams
 		case "wechat":
 			orderReq := &payment.Order{