diff --git a/server/marketserver/service/shopcart.go b/server/marketserver/service/shopcart.go
index c21683e3..8d0eabfa 100644
--- a/server/marketserver/service/shopcart.go
+++ b/server/marketserver/service/shopcart.go
@@ -20,7 +20,6 @@ func GetShopCartByOpenId(openId string) *common.ShopCart {
 				return
 			}
 			if ds.Next() {
-				cartDb := common.NewShopCart()
 				if q5.DecodeJson(ds.GetByName("data"), cartDb) == nil {
 				}
 			}