diff --git a/platformapi/jdapi/callback.go b/platformapi/jdapi/callback.go
index b7326a0a..3986f288 100644
--- a/platformapi/jdapi/callback.go
+++ b/platformapi/jdapi/callback.go
@@ -271,11 +271,11 @@ func GetCallbackMsg(request *http.Request) (callbackMsg *CallbackMsg, mapData ma
 	mapData = utils.URLValues2Map(values)
 	err = utils.Map2StructByJson(mapData, &callbackMsg, false)
 	globals.SugarLogger.Debugf("========mapdata1 := %s", utils.Format4Output(mapData, false))
-	if err := json.Unmarshal(data, &callbackMsg); err != nil {
-		return nil, nil, Err2CallbackResponse(err, "")
-	}
 
 	var callbackMsg2 *CallbackMsg
+	if err := json.Unmarshal(data, &callbackMsg2); err != nil {
+		return nil, nil, Err2CallbackResponse(err, "")
+	}
 	mapData2 := utils.Struct2MapByJson(callbackMsg2)
 	globals.SugarLogger.Debugf("========mapData2 := %s", utils.Format4Output(mapData2, false))