diff --git a/app/http/controllers/zhiliansys/zhiliansys.go b/app/http/controllers/zhiliansys/zhiliansys.go
index beeac1a..b89818a 100644
--- a/app/http/controllers/zhiliansys/zhiliansys.go
+++ b/app/http/controllers/zhiliansys/zhiliansys.go
@@ -43,6 +43,17 @@ func CreateOrder(c *gin.Context) {
 		return
 	}
 
+	item, err := zhilianServ.GetByOutTradeNo(request.OutTradeNo, request.MerchantId)
+	if err != nil {
+		common.Error(c, 400, err.Error())
+		return
+	}
+
+	if item != nil {
+		common.Error(c, 400, "订单已存在")
+		return
+	}
+
 	orders := &orderMod.Orders{
 		OutTradeNo:      request.OutTradeNo,
 		ProductId:       request.ProductId,