diff --git a/sdk/api_order_models.go b/sdk/api_order_models.go
index 3deb98d..215bd5b 100644
--- a/sdk/api_order_models.go
+++ b/sdk/api_order_models.go
@@ -35,7 +35,7 @@ type UnfinishOrderList struct {
 
 type UnfinishOrderInfo struct {
 	BizOrderId        int64  `json:"biz_order_id"`
-	corpId            string `json:"corp_id"`
+	CorpId            string `json:"corp_id"`
 	CreateTimestamp   int64  `json:"create_timestamp"`
 	GoodsCode         string `json:"goods_code"`
 	ItemCode          string `json:"item_code"`