diff --git a/supply/channel/order.go b/supply/channel/order.go
index 9fb432f..98aa411 100644
--- a/supply/channel/order.go
+++ b/supply/channel/order.go
@@ -149,7 +149,7 @@ type ArgsOrderLists struct {
 
 type OrderItem struct {
 	OrderId        uint            `json:"orderId"`
-	OrderSn        uint64          `json:"orderSn"`
+	OrderSn        string          `json:"orderSn"`
 	ReceiverName   string          `json:"receiverName"`
 	ReceiverMobile string          `json:"receiverMobile"`
 	Address        string          `json:"address"`