diff --git a/common/recharge.go b/common/recharge.go
index b22f866..b65dcee 100644
--- a/common/recharge.go
+++ b/common/recharge.go
@@ -150,13 +150,6 @@ const (
 	WithdrawOrderTypeAll
 )
 
-// 支付类型
-const (
-	WithdrawTypeWallet = 3
-	WithdrawTypeUPI    = 4
-	WithdrawTypeBank   = 7
-)
-
 type WithdrawOrder struct {
 	ID           uint         `gorm:"primarykey"`
 	UID          int          `gorm:"column:uid;not null;type:int(11)"`
diff --git a/modules/pay/agropay/base.go b/modules/pay/agropay/base.go
index b3873ee..c030d72 100644
--- a/modules/pay/agropay/base.go
+++ b/modules/pay/agropay/base.go
@@ -136,12 +136,12 @@ func (s *Sub) PackWithdrawReq() interface{} {
 		EncryptEmail: util.CalculateMD5(r.Email),
 		DeviceId:     r.DeviceID,
 	}
-	if r.PayType == common.WithdrawTypeBank {
+	if r.PayType == int64(common.PayTypeBank) {
 		send.EntryType = "banks"
 		send.AccountNo = r.CardNo
 		send.IfscCode = r.PayCode
 		send.BankName = r.BankName
-	} else if r.PayType == common.WithdrawTypeUPI {
+	} else if r.PayType == int64(common.PayTypeUPI) {
 		send.EntryType = "upi"
 		send.AccountNo = r.PayCode
 	} else {
diff --git a/modules/pay/mlpay/base.go b/modules/pay/mlpay/base.go
index 4a8f9ea..60a6963 100644
--- a/modules/pay/mlpay/base.go
+++ b/modules/pay/mlpay/base.go
@@ -147,26 +147,31 @@ func (s *Sub) PackWithdrawReq() interface{} {
 
 func (s *Sub) CheckSign(str string) bool {
 	log.Debug("callback:%v", s.Base.CallbackReq)
-	checkSign := ""
-	sign := str
 	if s.Base.Opt == base.OPTPayCB {
 		req := s.Base.CallbackReq.(*PayCallbackReq)
 		s.Base.CallbackResp.OrderID = req.PartnerOrderNo
 		s.Base.CallbackResp.APIOrderID = req.OrderNo
 		s.Base.CallbackResp.Success = req.Status == 1
-		checkSign = req.Sign
+		signStr := values.GetSignStrFormURLEncode(s.Base.C, req, "sign")
+		log.Debug("req:%v,pay signStr:%v", *req, signStr)
+		return checkSign(signStr, req.Sign, 0)
 	} else if s.Base.Opt == base.OPTWithdrawCB {
 		req := s.Base.CallbackReq.(*WithdrawCallbackReq)
+		signStr := values.GetSignStrFormURLEncode(s.Base.C, req, "sign")
+		log.Debug("req:%v,withdraw signStr:%v", *req, signStr)
 		s.Base.CallbackResp.OrderID = req.PartnerWithdrawNo
 		s.Base.CallbackResp.Success = req.Status == 1
+		return checkSign(signStr, req.Sign, 1)
 	}
-	if s.Base.KeyName == "" {
-		sign += "&key=" + s.Base.SignKey
+	return false
+}
+
+func checkSign(str, sign string, t int) (pass bool) {
+	str = values.GetSignStrURLEncode(str, "sign")
+	if t == 0 {
+		str += "&key=" + key
 	} else {
-		sign += "&" + s.Base.KeyName + "=" + s.Base.SignKey
+		str += "&key=" + withdrawKey
 	}
-	ret := util.CalculateMD5(sign)
-	ret = strings.ToUpper(ret)
-	log.Info("SignStr:%v,SignMD5:%v", sign, ret)
-	return checkSign == ret
+	return strings.ToUpper(util.CalculateMD5(str)) == sign
 }
diff --git a/modules/pay/values/values.go b/modules/pay/values/values.go
index 9a7b9b9..ff2b190 100644
--- a/modules/pay/values/values.go
+++ b/modules/pay/values/values.go
@@ -6,6 +6,8 @@ import (
 	"io/ioutil"
 	"math/rand"
 	"net/http"
+	"net/url"
+	"reflect"
 	"server/call"
 	"server/common"
 	"server/config"
@@ -546,3 +548,87 @@ func WithdrawAmount(w PayWay, success bool, amount int64) {
 		db.Mysql().UpdateW(&common.ConfigWithdrawChannels{}, map[string]interface{}{"amount": gorm.Expr("amount + ?", fee)}, fmt.Sprintf("channel_id = %d", int(w)))
 	})
 }
+
+// 根据body里的字段直接拼接出签名字符串
+func GetSignStrURLEncode(str string, pass ...string) string {
+	sortStrs := []string{}
+	all, err := url.ParseQuery(str)
+	if err != nil {
+		log.Error("err:%e", err)
+		return ""
+	}
+	for k := range all {
+		sortStrs = append(sortStrs, k)
+	}
+
+	signStr := ""
+	sort.Strings(sortStrs)
+	for _, v := range sortStrs {
+		shouldPass := false
+		for _, s := range pass {
+			if v == s {
+				shouldPass = true
+				break
+			}
+		}
+		if shouldPass {
+			continue
+		}
+		tmp := all.Get(v)
+		if len(tmp) > 1 && tmp[0] == 34 {
+			tmp = tmp[1 : len(tmp)-1]
+		}
+		if len(tmp) == 0 {
+			continue
+		}
+		signStr += fmt.Sprintf("%v=%v", v, string(tmp))
+		signStr += "&"
+	}
+	signStr = signStr[:len(signStr)-1]
+	log.Debug("signStr:%v", signStr)
+	return signStr
+}
+
+func GetSignStrFormURLEncode(c *gin.Context, model interface{}, pass ...string) string {
+	sortStrs := []string{}
+	for k := range c.Request.URL.Query() {
+		sortStrs = append(sortStrs, k)
+	}
+	// ref := reflect.ValueOf(model)
+	reft := reflect.TypeOf(model)
+	if reft.Kind() == reflect.Ptr {
+		// ref = ref.Elem()
+		reft = reft.Elem()
+	}
+	signStr := ""
+	sort.Strings(sortStrs)
+	for _, v := range sortStrs {
+		shouldPass := false
+		for _, s := range pass {
+			if v == s {
+				shouldPass = true
+				break
+			}
+		}
+		if shouldPass {
+			continue
+		}
+		param := c.Query(v)
+		if len(param) == 0 {
+			continue
+		}
+		first := v[0]
+		tmpName := strings.ToUpper(string(first)) + v[1:]
+		field, ok := reft.FieldByName(tmpName)
+		if ok && field.Tag.Get("encode") == "1" { // 需要urlencode
+			param, _ = url.QueryUnescape(param)
+		}
+
+		signStr += fmt.Sprintf("%v=%v", v, param)
+		signStr += "&"
+	}
+	fmt.Println(signStr)
+	signStr = signStr[:len(signStr)-1]
+	log.Debug("signStr:%v", signStr)
+	return signStr
+}