diff --git a/assets/lang/en.json b/assets/lang/en.json
index e42eb1b..da59091 100644
--- a/assets/lang/en.json
+++ b/assets/lang/en.json
@@ -55,5 +55,15 @@
   "Local Port": "Local Port",
   "Operation": "Operation",
   "Confirm": "Confirm",
-  "Cancel": "Cancel"
+  "Cancel": "Cancel",
+  "Token Invalid": "Token invalid",
+  "Operate Success": "Operate success",
+  "Operate Failed": "Operate failed",
+  "Should Check Proxy": "You should check at least one proxy",
+  "Confirm Remove Proxy": "Confirm to remove proxy ?",
+  "Operation Confirm": "Operation confirm",
+  "Param Error": "Param error",
+  "Frp Client Error": "Frp client error",
+  "Proxy Exist,": "Proxy name exist",
+  "Proxy Not Exist": "Proxy name not exist"
 }
\ No newline at end of file
diff --git a/assets/lang/zh.json b/assets/lang/zh.json
index 3fa43f7..3ed545c 100644
--- a/assets/lang/zh.json
+++ b/assets/lang/zh.json
@@ -55,5 +55,15 @@
   "Local Port": "本地端口",
   "Operation": "操作",
   "Confirm": "确定",
-  "Cancel": "取消"
+  "Cancel": "取消",
+  "Token Invalid": "登录信息无效",
+  "Operate Success": "操作成功",
+  "Operate Failed": "操作失败",
+  "Should Check Proxy": "请选中需要操作的代理",
+  "Confirm Remove Proxy": "确定删除代理？",
+  "Operation Confirm": "操作确认",
+  "Param Error": "参数错误",
+  "Frp Client Error": "Frp客户端错误",
+  "Proxy Exist": "代理名称重复",
+  "Proxy Not Exist": "代理名称不存在"
 }
\ No newline at end of file
diff --git a/assets/static/js/index-client-info.js b/assets/static/js/index-client-info.js
index 3be655f..d0ae52c 100644
--- a/assets/static/js/index-client-info.js
+++ b/assets/static/js/index-client-info.js
@@ -16,7 +16,7 @@ var loadClientInfo = (function ($) {
             type: 'none'
         }).done(function (result) {
             if (result.success) {
-                renderCommonInfo(result.data);
+                renderClientInfo(result.data);
             } else {
                 layui.layer.msg(result.message);
             }
@@ -25,7 +25,7 @@ var loadClientInfo = (function ($) {
         });
     }
 
-    function renderCommonInfo(data) {
+    function renderClientInfo(data) {
         data.tcp_mux = i18n[data.tcp_mux];
         data.tls_enable = i18n[data.tls_enable];
         var html = layui.laytpl($('#clientInfoTemplate').html()).render(data);
diff --git a/assets/static/js/index-proxy-list.js b/assets/static/js/index-proxy-list.js
index 96a4fb1..15c306c 100644
--- a/assets/static/js/index-proxy-list.js
+++ b/assets/static/js/index-proxy-list.js
@@ -233,7 +233,7 @@ var loadProxyInfo = (function ($) {
                 if (result.success) {
                     reloadTable();
                     layui.layer.close(index);
-                    layui.layer.msg('OperateSuccess', function (index) {
+                    layui.layer.msg(i18n['OperateSuccess'], function (index) {
                         layui.layer.close(index);
                     });
                 } else {
@@ -252,11 +252,11 @@ var loadProxyInfo = (function ($) {
      */
     function batchRemovePopup(data) {
         if (data.length === 0) {
-            layui.layer.msg('ShouldCheckProxy');
+            layui.layer.msg(i18n['ShouldCheckProxy']);
             return;
         }
-        layui.layer.confirm('ConfirmRemoveProxy', {
-            title: 'OperationConfirm',
+        layui.layer.confirm(i18n['ConfirmRemoveProxy'], {
+            title: i18n['OperationConfirm'],
             btn: [i18n['Confirm'], i18n['Cancel']]
         }, function (index) {
             var loading = layui.layer.load();
@@ -269,7 +269,7 @@ var loadProxyInfo = (function ($) {
                     if (result.success) {
                         reloadTable();
                         layui.layer.close(index);
-                        layui.layer.msg('OperateSuccess', function (index) {
+                        layui.layer.msg(i18n['OperateSuccess'], function (index) {
                             layui.layer.close(index);
                         });
                     } else {
@@ -295,19 +295,16 @@ var loadProxyInfo = (function ($) {
      * @param result
      */
     function errorMsg(result) {
-        layui.layer.msg(result.message);
-        // var reason = i18n['OtherError'];
-        // if (result.code === 1)
-        //     reason = i18n['ParamError'];
-        // else if (result.code === 2)
-        //     reason = i18n['SaveError'];
-        // else if (result.code === 3)
-        //     reason = i18n['FrpServerError'];
-        // else if (result.code === 4)
-        //     reason = i18n['ProxyExist'];
-        // else if (result.code === 5)
-        //     reason = i18n['ProxyNotExist'];
-        // layui.layer.msg(i18n['OperateFailed'] + ',' + reason)
+        var reason = i18n['OtherError'];
+        if (result.code === 1)
+            reason = i18n['ParamError'];
+        else if (result.code === 2)
+            reason = i18n['FrpClientError'];
+        else if (result.code === 3)
+            reason = i18n['ProxyExist'];
+        else if (result.code === 4)
+            reason = i18n['ProxyNotExist'];
+        layui.layer.msg(i18n['OperateFailed'] + ',' + reason)
     }
 
     return loadProxyInfo;
diff --git a/assets/static/js/index.js b/assets/static/js/index.js
index 0d1d831..10fe4a6 100644
--- a/assets/static/js/index.js
+++ b/assets/static/js/index.js
@@ -1,4 +1,3 @@
-var http_port, https_port;
 (function ($) {
     $(function () {
         function init() {
diff --git a/assets/templates/index.html b/assets/templates/index.html
index 3fd4d52..786210b 100644
--- a/assets/templates/index.html
+++ b/assets/templates/index.html
@@ -153,7 +153,7 @@
             </ul>
             <div class="layui-tab-content">
                 <input type="hidden" name="type">
-                <input type="hidden" name="${ .oldNameKey }" id="oldName">
+                <input type="hidden" name="${ .OldNameKey }" id="oldName">
                 <div class="layui-tab-item layui-show">
                     <div class="layui-form-item">
                         <label class="layui-form-label">${ .ProxyName }</label>
diff --git a/pkg/server/controller/controller.go b/pkg/server/controller/controller.go
index bea5be2..787c09b 100644
--- a/pkg/server/controller/controller.go
+++ b/pkg/server/controller/controller.go
@@ -57,7 +57,7 @@ func (c *HandleController) MakeIndexFunc() func(context *gin.Context) {
 	return func(context *gin.Context) {
 		context.HTML(http.StatusOK, "index.html", gin.H{
 			"version":           c.Version,
-			"oldNameKey":        oldNameKey,
+			"OldNameKey":        OldNameKey,
 			"showExit":          trimString(c.CommonInfo.AdminUser) != "" && trimString(c.CommonInfo.AdminPwd) != "",
 			"FrpcPanel":         ginI18n.MustGetMessage(context, "Frpc Panel"),
 			"ClientInfo":        ginI18n.MustGetMessage(context, "Client Info"),
@@ -103,22 +103,32 @@ func (c *HandleController) MakeIndexFunc() func(context *gin.Context) {
 func (c *HandleController) MakeLangFunc() func(context *gin.Context) {
 	return func(context *gin.Context) {
 		context.JSON(http.StatusOK, gin.H{
-			"EmptyData":     ginI18n.MustGetMessage(context, "Empty data"),
-			"true":          ginI18n.MustGetMessage(context, "true"),
-			"false":         ginI18n.MustGetMessage(context, "false"),
-			"Name":          ginI18n.MustGetMessage(context, "Name"),
-			"Type":          ginI18n.MustGetMessage(context, "Type"),
-			"LocalAddress":  ginI18n.MustGetMessage(context, "Local Address"),
-			"Plugin":        ginI18n.MustGetMessage(context, "Plugin"),
-			"RemoteAddress": ginI18n.MustGetMessage(context, "Remote Address"),
-			"Status":        ginI18n.MustGetMessage(context, "Status"),
-			"Info":          ginI18n.MustGetMessage(context, "Info"),
-			"running":       ginI18n.MustGetMessage(context, "running"),
-			"LocalIp":       ginI18n.MustGetMessage(context, "Local Ip"),
-			"LocalPort":     ginI18n.MustGetMessage(context, "Local Port"),
-			"Operation":     ginI18n.MustGetMessage(context, "Operation"),
-			"Confirm":       ginI18n.MustGetMessage(context, "Confirm"),
-			"Cancel":        ginI18n.MustGetMessage(context, "Cancel"),
+			"EmptyData":          ginI18n.MustGetMessage(context, "Empty data"),
+			"true":               ginI18n.MustGetMessage(context, "true"),
+			"false":              ginI18n.MustGetMessage(context, "false"),
+			"Name":               ginI18n.MustGetMessage(context, "Name"),
+			"Type":               ginI18n.MustGetMessage(context, "Type"),
+			"LocalAddress":       ginI18n.MustGetMessage(context, "Local Address"),
+			"Plugin":             ginI18n.MustGetMessage(context, "Plugin"),
+			"RemoteAddress":      ginI18n.MustGetMessage(context, "Remote Address"),
+			"Status":             ginI18n.MustGetMessage(context, "Status"),
+			"Info":               ginI18n.MustGetMessage(context, "Info"),
+			"running":            ginI18n.MustGetMessage(context, "running"),
+			"LocalIp":            ginI18n.MustGetMessage(context, "Local Ip"),
+			"LocalPort":          ginI18n.MustGetMessage(context, "Local Port"),
+			"Operation":          ginI18n.MustGetMessage(context, "Operation"),
+			"Confirm":            ginI18n.MustGetMessage(context, "Confirm"),
+			"Cancel":             ginI18n.MustGetMessage(context, "Cancel"),
+			"TokenInvalid":       ginI18n.MustGetMessage(context, "Token Invalid"),
+			"OperateSuccess":     ginI18n.MustGetMessage(context, "Operate Success"),
+			"OperateFailed":      ginI18n.MustGetMessage(context, "Operate Failed"),
+			"ShouldCheckProxy":   ginI18n.MustGetMessage(context, "Should Check Proxy"),
+			"ConfirmRemoveProxy": ginI18n.MustGetMessage(context, "Confirm Remove Proxy"),
+			"OperationConfirm":   ginI18n.MustGetMessage(context, "Operation Confirm"),
+			"ParamError":         ginI18n.MustGetMessage(context, "Param Error"),
+			"FrpClientError":     ginI18n.MustGetMessage(context, "Frp Client Error"),
+			"ProxyExist":         ginI18n.MustGetMessage(context, "Proxy Exist"),
+			"ProxyNotExist":      ginI18n.MustGetMessage(context, "Proxy Not Exist"),
 		})
 	}
 }
@@ -143,7 +153,7 @@ func (c *HandleController) MakeAddProxyFunc() func(context *gin.Context) {
 			return
 		}
 
-		name := proxy[nameKey]
+		name := proxy[NameKey]
 
 		if trimString(name) == "" {
 			response.Success = false
@@ -163,13 +173,13 @@ func (c *HandleController) MakeAddProxyFunc() func(context *gin.Context) {
 			return
 		}
 
-		delete(proxy, nameKey)
+		delete(proxy, NameKey)
 		clientProxies[name] = proxy
 
 		res := c.UpdateFrpcConfig()
 		if !res.Success {
 			response.Success = false
-			response.Code = SaveError
+			response.Code = res.Code
 			response.Message = fmt.Sprintf("proxy add failed, error : %v", res.Message)
 			log.Printf(response.Message)
 			context.JSON(http.StatusOK, &response)
@@ -200,8 +210,8 @@ func (c *HandleController) MakeUpdateProxyFunc() func(context *gin.Context) {
 			return
 		}
 
-		oldName := proxy[oldNameKey]
-		name := proxy[nameKey]
+		oldName := proxy[OldNameKey]
+		name := proxy[NameKey]
 
 		if trimString(oldName) == "" || trimString(name) == "" {
 			response.Success = false
@@ -212,6 +222,15 @@ func (c *HandleController) MakeUpdateProxyFunc() func(context *gin.Context) {
 			return
 		}
 
+		if _, exist := clientProxies[oldName]; !exist {
+			response.Success = false
+			response.Code = ProxyNotExist
+			response.Message = fmt.Sprintf("proxy update failed, proxy not exist")
+			log.Printf(response.Message)
+			context.JSON(http.StatusOK, &response)
+			return
+		}
+
 		if oldName != name {
 			if _, exist := clientProxies[name]; exist {
 				response.Success = false
@@ -223,15 +242,15 @@ func (c *HandleController) MakeUpdateProxyFunc() func(context *gin.Context) {
 			}
 		}
 
-		delete(proxy, nameKey)
-		delete(proxy, oldNameKey)
+		delete(proxy, NameKey)
+		delete(proxy, OldNameKey)
 		delete(clientProxies, oldName)
 		clientProxies[name] = proxy
 
 		res := c.UpdateFrpcConfig()
 		if !res.Success {
 			response.Success = false
-			response.Code = SaveError
+			response.Code = res.Code
 			response.Message = fmt.Sprintf("user update failed, error : %v", res.Message)
 			log.Printf(response.Message)
 			context.JSON(http.StatusOK, &response)
@@ -264,7 +283,7 @@ func (c *HandleController) MakeRemoveProxyFunc() func(context *gin.Context) {
 
 		tempProxyNames := make([]string, len(proxies))
 		for index, proxy := range proxies {
-			name := proxy[nameKey]
+			name := proxy[NameKey]
 
 			if trimString(name) == "" {
 				response.Success = false
@@ -294,7 +313,7 @@ func (c *HandleController) MakeRemoveProxyFunc() func(context *gin.Context) {
 		res := c.UpdateFrpcConfig()
 		if !res.Success {
 			response.Success = false
-			response.Code = SaveError
+			response.Code = res.Code
 			response.Message = fmt.Sprintf("proxy remvoe failed, error : %v", res.Message)
 			log.Printf(response.Message)
 			context.JSON(http.StatusOK, &response)
@@ -314,7 +333,7 @@ func (c *HandleController) MakeProxyFunc() func(context *gin.Context) {
 		response, err := c.getClientResponse(request, c.buildClient())
 
 		if err != nil {
-			res.Code = FrpServerError
+			res.Code = FrpClientError
 			res.Success = false
 			res.Message = err.Error()
 			log.Print(err)
@@ -348,7 +367,7 @@ func (c *HandleController) UpdateFrpcConfig() ProxyResponse {
 	response, err := c.getClientResponse(request, c.buildClient())
 
 	if err != nil {
-		res.Code = FrpServerError
+		res.Code = FrpClientError
 		res.Success = false
 		res.Message = err.Error()
 		log.Print(err)
@@ -368,7 +387,7 @@ func (c *HandleController) ReloadFrpcConfig(res *ProxyResponse) {
 	response, err := c.getClientResponse(request, c.buildClient())
 
 	if err != nil {
-		res.Code = FrpServerError
+		res.Code = FrpClientError
 		res.Success = false
 		res.Message = err.Error()
 		log.Print(err)
diff --git a/pkg/server/controller/utils.go b/pkg/server/controller/utils.go
index d98df48..3b50556 100644
--- a/pkg/server/controller/utils.go
+++ b/pkg/server/controller/utils.go
@@ -128,7 +128,7 @@ func (c *HandleController) parseConfigure(content, proxyType string) (interface{
 			currentProxies[name] = section
 		}
 		clientProxies[name] = section
-		delete(clientProxies[name], nameKey)
+		delete(clientProxies[name], NameKey)
 	}
 
 	if proxyType == "none" {
diff --git a/pkg/server/controller/variables.go b/pkg/server/controller/variables.go
index 17412bd..9eeed9f 100644
--- a/pkg/server/controller/variables.go
+++ b/pkg/server/controller/variables.go
@@ -7,24 +7,14 @@ import (
 const (
 	Success int = iota
 	ParamError
-	SaveError
-	FrpServerError
+	FrpClientError
 	ProxyExist
 	ProxyNotExist
 )
 
 const (
-	ProxyAdd int = iota
-	ProxyUpdate
-	ProxyRemove
-)
-
-const (
-	nameKey    = "name"
-	oldNameKey = "_old_name"
-)
-
-const (
+	NameKey          = "name"
+	OldNameKey       = "_old_name"
 	SessionName      = "GOSESSION"
 	AuthName         = "_PANEL_AUTH"
 	LoginUrl         = "/login"