diff --git a/pkg/fuiou/scan.go b/pkg/fuiou/scan.go
index c6c811e..577e28a 100644
--- a/pkg/fuiou/scan.go
+++ b/pkg/fuiou/scan.go
@@ -12,7 +12,7 @@ import (
 // reservedExpireMinute: 订单有效期分钟（reserved 字段，不参与签名）。
 func (c *Client) PreCreate(orderNo, amount, goodsDesc, termIP, orderType, reservedExpireMinute string) (*PreCreateResponse, error) {
 	req := &PreCreateRequest{
-		Version:              "1.0",
+		Version:              "1",
 		InsCd:                c.InsCd,
 		MchntCd:              c.MchntCd,
 		TermId:               c.TermId,
@@ -59,7 +59,7 @@ func (c *Client) PreCreate(orderNo, amount, goodsDesc, termIP, orderType, reserv
 // orderType: 订单类型，须与下单时一致。
 func (c *Client) CommonQuery(orderNo, orderType string) (*CommonQueryResponse, error) {
 	req := &CommonQueryRequest{
-		Version:      "1.0",
+		Version:      "1",
 		InsCd:        c.InsCd,
 		MchntCd:      c.MchntCd,
 		TermId:       c.TermId,
diff --git a/pkg/fuiou/types.go b/pkg/fuiou/types.go
index 636cec7..6003f34 100644
--- a/pkg/fuiou/types.go
+++ b/pkg/fuiou/types.go
@@ -103,6 +103,7 @@ type PreCreateRequest struct {
 	NotifyUrl            string   `xml:"notify_url"`             // 回调地址
 	GoodsDesc            string   `xml:"goods_des"`              // 商品描述
 	GoodsDetail          string   `xml:"goods_detail"`           // 商品详情（可选）
+	GoodsTag             string   `xml:"goods_tag"`              // 商品标记（可选，非 reserved，参与签名）
 	AddnInf              string   `xml:"addn_inf"`               // 附加数据（可选）
 	ReservedExpireMinute string   `xml:"reserved_expire_minute"` // 订单有效期分钟（reserved，不参与签名）
 }