diff --git a/platformapi/ebaiapi/callback.go b/platformapi/ebaiapi/callback.go
index 497400f2..c7be08be 100644
--- a/platformapi/ebaiapi/callback.go
+++ b/platformapi/ebaiapi/callback.go
@@ -113,16 +113,12 @@ func (a *API) unmarshalData(cmd string, data []byte, msg interface{}) (callbackR
 	return nil
 }
 
-func (a *API) CheckCallbackValidation(request *http.Request) (callbackResponse *CallbackResponse) {
-	params := make(url.Values)
-	for k, v := range request.PostForm {
-		params[k] = v
-	}
+func (a *API) CheckCallbackValidation(cmd string, params url.Values) (callbackResponse *CallbackResponse) {
 	sign := a.signParams(params)
-	if sign != request.FormValue(signKey) {
-		msg := fmt.Sprintf("Signature is not ok, mine:%v, get:%v", sign, request.FormValue(signKey))
+	if sign != params.Get(signKey) {
+		msg := fmt.Sprintf("Signature is not ok, mine:%v, get:%v", sign, params.Get(signKey))
 		baseapi.SugarLogger.Info(msg)
-		return a.Err2CallbackResponse(GetCmd(request), errors.New(msg), nil)
+		return a.Err2CallbackResponse(cmd, errors.New(msg), nil)
 	}
 	return nil
 }
@@ -130,15 +126,20 @@ func (a *API) CheckCallbackValidation(request *http.Request) (callbackResponse *
 func (a *API) GetCallbackMsg(request *http.Request) (msg *CallbackMsg, callbackResponse *CallbackResponse) {
 	err := request.ParseForm()
 	if err == nil {
-		if callbackResponse = a.CheckCallbackValidation(request); callbackResponse != nil {
-			return nil, callbackResponse
+		params := make(url.Values)
+		for k := range request.PostForm {
+			decodedValue, _ := url.QueryUnescape(request.PostFormValue(k))
+			params.Set(k, decodedValue)
 		}
 		msg = new(CallbackMsg)
-		if callbackResponse = a.unmarshalData(GetCmd(request), []byte(request.FormValue("body")), &msg.Body); callbackResponse != nil {
+		msg.Cmd = GetCmd(request)
+		if callbackResponse = a.CheckCallbackValidation(msg.Cmd, params); callbackResponse != nil {
 			return nil, callbackResponse
 		}
-		msg.Cmd = GetCmd(request)
-		msg.Timestamp = utils.Str2Int64(utils.Interface2String(request.FormValue("timestamp")))
+		if callbackResponse = a.unmarshalData(msg.Cmd, []byte(params.Get("body")), &msg.Body); callbackResponse != nil {
+			return nil, callbackResponse
+		}
+		msg.Timestamp = utils.Str2Int64(utils.Interface2String(params.Get("timestamp")))
 		var tmpObj interface{}
 		switch msg.Cmd {
 		case CmdOrderPartRefund:
@@ -158,6 +159,7 @@ func (a *API) GetCallbackMsg(request *http.Request) (msg *CallbackMsg, callbackR
 	return nil, a.Err2CallbackResponse("", err, nil)
 }
 
-func GetCmd(request *http.Request) string {
-	return request.FormValue("cmd")
+func GetCmd(request *http.Request) (cmd string) {
+	cmd, _ = url.QueryUnescape(request.FormValue("cmd"))
+	return cmd
 }