diff --git a/static/js/chat-page.js b/static/js/chat-page.js
index be7aa47..29bae49 100644
--- a/static/js/chat-page.js
+++ b/static/js/chat-page.js
@@ -166,18 +166,6 @@ new Vue({
             }
                 let _this=this;
                 var extra=getQuery("extra");
-                if(extra!=""){
-                    var extraJson=JSON.parse(window.atob(extra))
-                    for(var key in extraJson){
-                        if(extraJson[key]==""){
-                            _this.$message({
-                                message: "用户扩展信息错误",
-                                type: 'error'
-                            });
-                            return;
-                        }
-                    }
-                }
                 //发送消息
                 $.post("/visitor_login",{visitor_id:visitor_id,refer:REFER,to_id:KEFU_ID,extra:extra},function(res){
                     if(res.code!=200){
@@ -228,7 +216,9 @@ new Vue({
                             content.content = replaceContent(visitorMes["content"]);
                             content.time = visitorMes["time"];
                             _this.msgList.push(content);
-                            _this.scrollBottom();
+                            if(_this.msgList.length>=4){
+                                _this.scrollBottom();
+                            }
                         }
                         _this.$nextTick(function(){
                             $(".chatBox").append("<div class=\"chatTime\">"+GOFLY_LANG[LANG]['historymes']+"</div>");