diff --git a/sdk/dunion-go-sdk/model/order.go b/sdk/dunion-go-sdk/model/order.go
index b4768c7..61dbb38 100644
--- a/sdk/dunion-go-sdk/model/order.go
+++ b/sdk/dunion-go-sdk/model/order.go
@@ -11,7 +11,7 @@ type ResponseOrderItem struct {
 	// `393`: 滴滴货运<br>
 	// `500`: 花小猪<br>
 	// `120`: 滴滴代驾
-	ProductId int64 `json:"product_id"`
+	ProductId string `json:"product_id"`
 	// 支付时间
 	PayTime int64 `json:"pay_time"`
 	// 支付金额，单位：分