diff --git a/platformapi/alipayapi/utils_test.go b/platformapi/alipayapi/utils_test.go
index 2d7222e7..85361334 100644
--- a/platformapi/alipayapi/utils_test.go
+++ b/platformapi/alipayapi/utils_test.go
@@ -8,7 +8,7 @@ import (
 )
 
 func TestSystemAuthToken(t *testing.T) {
-	result, err := api.SystemAuthToken(GrantTypeCode, "85636904854946afa6890299e0a1VX17", "")
+	result, err := api.SystemAuthToken(GrantTypeCode, "e4f95e2065a84625aaf01dea2703NA17", "")
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/platformapi/kuaishou_mini/kuaishou_api.go b/platformapi/kuaishou_mini/kuaishou_api.go
index 6d2d7946..d72c3138 100644
--- a/platformapi/kuaishou_mini/kuaishou_api.go
+++ b/platformapi/kuaishou_mini/kuaishou_api.go
@@ -1,11 +1,13 @@
 package kuaishou_mini
 
 import (
+	"crypto/md5"
 	"errors"
 	"fmt"
 	"git.rosy.net.cn/baseapi/platformapi"
 	"git.rosy.net.cn/baseapi/utils"
 	"net/http"
+	"sort"
 	"strings"
 	"sync"
 )
@@ -93,3 +95,34 @@ func (a *API) AccessAPI2(url string, params map[string]interface{}) (retVal map[
 		})
 	return retVal, err
 }
+
+// sign 签名
+func (a *API) sign(param map[string]interface{}) string {
+	param["app_id"] = a.appId
+	var paramsArr []string
+	for k, v := range param {
+		if k == "sign" || k == "access_token" {
+			continue
+		}
+		value := strings.TrimSpace(fmt.Sprintf("%v", v))
+		if strings.HasPrefix(value, "\"") && strings.HasSuffix(value, "\"") && len(value) > 1 {
+			value = value[1 : len(value)-1]
+		}
+		value = strings.TrimSpace(value)
+		if value == "" || value == "nil" {
+			continue
+		}
+		paramsArr = append(paramsArr, k)
+	}
+
+	sort.Strings(paramsArr)
+	signParma := make([]string, 0, 0)
+	for k, v := range paramsArr {
+		if utils.IsNil(param[v]) {
+			signParma[k] = v + "=" + fmt.Sprintf("%v", param[v])
+		}
+	}
+	sign := strings.Join(signParma, "&") + a.appSecret
+	return fmt.Sprintf("%x", md5.Sum([]byte(sign)))
+
+}
diff --git a/platformapi/kuaishou_mini/kuaishou_model.go b/platformapi/kuaishou_mini/kuaishou_model.go
index 30d25c1a..35ecb6ee 100644
--- a/platformapi/kuaishou_mini/kuaishou_model.go
+++ b/platformapi/kuaishou_mini/kuaishou_model.go
@@ -24,8 +24,8 @@ type GetAutoTokenRes struct {
 	TokenType   string `json:"token_type"`
 }
 
-// PreCreateOrderRes 快手预发单
-type PreCreateOrderRes struct {
+// PreCreateOrderReq 快手预发单
+type PreCreateOrderReq struct {
 	OutOrderNo           string `json:"out_order_no"`            // 商户系统内部订单号，只能是数字、大小写字母_-*且在同一个商户号下唯一
 	OpenId               string `json:"open_id"`                 // 快手用户在当前小程序的open_id
 	TotalAmount          int64  `json:"total_amount"`            // 用户支付金额，单位为[分]。
@@ -41,3 +41,9 @@ type PreCreateOrderRes struct {
 	MultiCopiesGoodsInfo string `json:"multi_copies_goods_info"` // 单商品购买多份场景 "[{"copies":2}]"
 	CancelOrder          int64  `json:"cancel_order"`            // 该字段表示创建订单的同时是否覆盖之前已存在的订单。
 }
+
+type PreCreateOrderResponse struct {
+	Result    int    `json:"result"`
+	ErrorMsg  string `json:"error_msg"`
+	OrderInfo string `json:"order_info"` //拉起收银台的 orderInfo
+}
diff --git a/platformapi/kuaishou_mini/kuaishou_pay.go b/platformapi/kuaishou_mini/kuaishou_pay.go
index 7ee833a6..b17443c5 100644
--- a/platformapi/kuaishou_mini/kuaishou_pay.go
+++ b/platformapi/kuaishou_mini/kuaishou_pay.go
@@ -1,31 +1,34 @@
 package kuaishou_mini
 
 import (
+	"errors"
 	"fmt"
+	"git.rosy.net.cn/baseapi/utils"
 )
 
 // PreCreateOrder 预下单生成支付信息
-//func (a *API) PreCreateOrder(param *PreCreateOrderRes) error {
-//	if a.appId == "" || a.appSecret == "" {
-//		return error
-//	}
-//
-//	result, err := a.AccessAPI2(a.FullUrl(KuaiShouPreCreateOrder), utils.Struct2MapByJson(param))
-//	if err != nil {
-//		return "", "", err
-//	}
-//
-//	auth := GetLoginAuth{}
-//	if err := utils.Map2StructByJson(result, &auth, false); err != nil {
-//		return "", "", err
-//	}
-//
-//	if auth.Error != "" {
-//		return "", "", errors.New(auth.ErrorMsg)
-//	}
-//
-//	return auth.SessionKey, auth.OpenId, nil
-//}
+func (a *API) PreCreateOrder(param *PreCreateOrderReq) (string, error) {
+	if a.appId == "" || a.appSecret == "" {
+		return "", errors.New("appId/appSecret 不能为空")
+	}
+
+	param.Sign = a.sign(utils.Struct2MapByJson(param))
+	result, err := a.AccessAPI2(a.FullUrl(KuaiShouPreCreateOrder), utils.Struct2MapByJson(param))
+	if err != nil {
+		return "", err
+	}
+
+	order := PreCreateOrderResponse{}
+	if err := utils.Map2StructByJson(result, &order, false); err != nil {
+		return "", err
+	}
+
+	if order.Result != 1 {
+		return "", errors.New(order.ErrorMsg)
+	}
+
+	return order.OrderInfo, nil
+}
 
 func (a *API) FullUrl(bashUrl string) string {
 	return fmt.Sprintf(bashUrl+"?app_id=%s&access_token=%s", a.appId, a.accessToken)
diff --git a/platformapi/kuaishou_mini/kuaishou_test.go b/platformapi/kuaishou_mini/kuaishou_test.go
index 2461d0d3..d4c10cd0 100644
--- a/platformapi/kuaishou_mini/kuaishou_test.go
+++ b/platformapi/kuaishou_mini/kuaishou_test.go
@@ -67,3 +67,26 @@ func DecryptUserMsg(sessionKey, iv, msg string) (string, error) {
 func TestCreateToken(t *testing.T) {
 	api.GetToken()
 }
+
+// 快手预下单获取支付参数
+func TestPreCreateOrder(t *testing.T) {
+	param := &PreCreateOrderReq{
+		OutOrderNo:           "1024028220",
+		OpenId:               "f198f59711c9785314bf5724f7ab9f47",
+		TotalAmount:          1,
+		Subject:              "这是一个测试商品",
+		Detail:               "大白菜,小白菜,中白菜",
+		TypeDetail:           1832, // 素菜
+		ExpireTime:           10 * 60,
+		Sign:                 "",
+		Attach:               "",
+		NotifyUrl:            "https://callback.jxc4.com/tictoc/tiktokMsg",
+		GoodsId:              "",
+		GoodsDetailUrl:       "",
+		MultiCopiesGoodsInfo: "",
+		CancelOrder:          0,
+	}
+	data, err := api.PreCreateOrder(param)
+	globals.SugarLogger.Debugf("data := %s", utils.Format4Output(data, false))
+	globals.SugarLogger.Debugf("err := %s", utils.Format4Output(err, false))
+}