diff --git a/platformapi/tonglianpayapi/callback.go b/platformapi/tonglianpayapi/callback.go
index 4c3ec645..eec85bef 100644
--- a/platformapi/tonglianpayapi/callback.go
+++ b/platformapi/tonglianpayapi/callback.go
@@ -1 +1,52 @@
 package tonglianpayapi
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+)
+
+const (
+	MsgTypeUnkown = 0        // 未知
+	MsgTypePay    = "VSP501" // 支付结果回调
+	MsgTypeRefund = "VSP503" // 退款结果回调
+
+	TrxStatusSuccess = "0000"
+)
+
+type CallBackResult struct {
+	AppID       string `json:"appID"`
+	OuttrxID    string `json:"outtrxID"`
+	TrxCode     string `json:"trxCode"`
+	TrxID       string `json:"trxID"`
+	TrxAmt      int    `json:"trxAmt"`
+	TrxDate     string `json:"trxDate"`
+	PayTime     string `json:"payTime"`
+	ChnlTrxID   string `json:"chnlTrxID"`
+	TrxStatus   string `json:"trxStatus"`
+	CusID       string `json:"cusID"`
+	TermNo      string `json:"termNo"`
+	TermBatchid string `json:"termBatchid"`
+	TermTraceno string `json:"termTraceno"`
+	TermAuthno  string `json:"termAuthno"`
+	TermRefnum  string `json:"termRefnum"`
+	TrxReserved string `json:"trxReserved"`
+	SrcTrxid    string `json:"srcTrxid"`
+	CusorderID  string `json:"cusorderID"`
+	Acct        string `json:"acct"`
+	Fee         string `json:"fee"`
+	SignType    string `json:"signType"`
+	Cmid        string `json:"cmid"`
+	Chnlid      string `json:"chnlid"`
+	Sign        string `json:"sign"`
+}
+
+func (a *API) GetCallbackMsg(request *http.Request) (call *CallBackResult, err error) {
+	data, err := ioutil.ReadAll(request.Body)
+	call = &CallBackResult{}
+	json.Unmarshal(data, &call)
+	if err != nil {
+		return nil, err
+	}
+	return call, err
+}
diff --git a/platformapi/tonglianpayapi/tonglianpayapi.go b/platformapi/tonglianpayapi/tonglianpayapi.go
index 9d899de3..e4b2e239 100644
--- a/platformapi/tonglianpayapi/tonglianpayapi.go
+++ b/platformapi/tonglianpayapi/tonglianpayapi.go
@@ -64,6 +64,34 @@ type PayInfo struct {
 	Package   string `json:"package"`
 	SignType  string `json:"signType"`
 	PaySign   string `json:"paySign"`
+	PrepayID  string `json:"prepayID"`
+}
+
+type PayRefundParam struct {
+	CusID     string `json:"cusid"`
+	AppID     string `json:"appid"`
+	Trxamt    int    `json:"trxamt"` //交易金额 单位为分
+	Reqsn     string `json:"reqsn"`  //商户交易单号
+	OldReqsn  string `json:"oldReqsn"`
+	Remark    string `json:"remark"`
+	RandomStr string `json:"randomStr"`
+	Sign      string `json:"sign"`
+}
+
+type PayRefundResult struct {
+	RetCode   string `json:"retCode"`
+	RetMsg    string `json:"retMsg"`
+	CusID     string `json:"cusID"`
+	AppID     string `json:"appID"`
+	TrxID     string `json:"trxID"`
+	Reqsn     string `json:"reqsn"`
+	TrxStatus string `json:"trxStatus"`
+	FinTime   string `json:"finTime"`
+	ErrMsg    string `json:"errMsg"`
+	RandomStr string `json:"randomStr"`
+	Sign      string `json:"sign"`
+	Fee       int    `json:"fee"`
+	TrxCode   string `json:"trxCode"`
 }
 
 func New(appID, appKey, cusID, subAppid string, config ...*platformapi.APIConfig) *API {
@@ -108,9 +136,9 @@ func (a *API) AccessAPI(action string, bizParams map[string]interface{}) (retVal
 	if action == sepcAction {
 		params["paytype"] = payType
 		params["sub_appid"] = a.subAppid
-		signStr := a.signParam(params)
-		params["sign"] = signStr
 	}
+	signStr := a.signParam(params)
+	params["sign"] = signStr
 	fullURL := utils.GenerateGetURL(prodURL, action, nil)
 
 	err = platformapi.AccessPlatformAPIWithRetry(a.client,
@@ -151,3 +179,16 @@ func (a *API) CreateUnitorderOrder(param *CreateUnitorderOrderParam) (result *Cr
 	}
 	return result, err
 }
+
+func (a *API) PayRefund(param *PayRefundParam) (result *PayRefundResult, err error) {
+	params := make(map[string]interface{})
+	params["trxamt"] = param.Trxamt
+	params["reqsn"] = param.Reqsn
+	params["oldreqsn"] = param.OldReqsn
+	params["remark"] = param.Remark
+	retVal, err := a.AccessAPI("unitorder/refund", params)
+	if err == nil {
+		utils.Map2StructByJson(retVal, &result, false)
+	}
+	return result, err
+}