diff --git a/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigListVM.cs b/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigListVM.cs
index 91ef7fb..b273ad5 100644
--- a/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigListVM.cs
+++ b/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigListVM.cs
@@ -34,13 +34,19 @@ namespace IoTGateway.ViewModel.BasicData.DeviceConfigVMs
                 .OrderBy(x => x.Parent.Index).ThenBy(x => x.Parent.DeviceName)
                 .OrderBy(x => x.Index).ThenBy(x => x.DeviceName)
                 .GetTreeSelectListItems(Wtm, x => x.DeviceName);
+
+            var deviceService = Wtm.ServiceProvider.GetService(typeof(DeviceService)) as DeviceService;
             foreach (var device in AllDevices)
             {
                 foreach (var item in device.Children)
                 {
-                    item.Text = item.Text;
-                    item.Icon = "layui-icon layui-icon-link";
+                    var deviceThread = deviceService.DeviceThreads.Where(x => x._device.ID.ToString() == (string)item.Value).FirstOrDefault();
+                    if (deviceThread != null)
+                        item.Icon = deviceThread._device.AutoStart ? (deviceThread._driver.IsConnected ? "layui-icon layui-icon-link" : "layui-icon layui-icon-unlink") : "layui-icon layui-icon-pause";
+
+                    item.Text = " "+item.Text;
                     item.Expended = true;
+                    item.Selected =item.Value.ToString() == IoTBackgroundService.ConfigSelectDeviceId.ToString();
                 }
             }
             base.InitListVM();
diff --git a/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigVM.cs b/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigVM.cs
index 733773a..4c26dd6 100644
--- a/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigVM.cs
+++ b/IoTGateway.ViewModel/BasicData/DeviceConfigVMs/DeviceConfigVM.cs
@@ -31,7 +31,7 @@ namespace IoTGateway.ViewModel.BasicData.DeviceConfigVMs
                 .GetSelectListItems(Wtm, y => y.DeviceName);
             if (Entity.DeviceId != null)
             {
-                if (Entity.EnumInfo != null)
+                if (!string.IsNullOrEmpty(Entity.EnumInfo))
                 {
                     AllTypes = new List<ComboSelectListItem>();
                     var EnumInfos = JsonSerializer.Deserialize<Dictionary<string, int>>(Entity.EnumInfo);
diff --git a/IoTGateway.ViewModel/BasicData/DeviceVariableVMs/DeviceVariableListVM.cs b/IoTGateway.ViewModel/BasicData/DeviceVariableVMs/DeviceVariableListVM.cs
index d34ccf8..73146e9 100644
--- a/IoTGateway.ViewModel/BasicData/DeviceVariableVMs/DeviceVariableListVM.cs
+++ b/IoTGateway.ViewModel/BasicData/DeviceVariableVMs/DeviceVariableListVM.cs
@@ -47,10 +47,11 @@ namespace IoTGateway.ViewModel.BasicData.DeviceVariableVMs
                 {
                     var deviceThread = deviceService.DeviceThreads.Where(x => x._device.ID.ToString() == (string)item.Value).FirstOrDefault();
                     if (deviceThread != null)
-                        item.Icon = deviceThread._device.AutoStart ? (deviceThread._driver.IsConnected ? "layui-icon-link" : "layui-icon-unlink") : "layui-icon-pause";
+                        item.Icon = deviceThread._device.AutoStart ? (deviceThread._driver.IsConnected ? "layui-icon layui-icon-link" : "layui-icon layui-icon-unlink") : "layui-icon layui-icon-pause";
 
-                    item.Text = item.Text;
+                    item.Text = " " + item.Text;
                     item.Expended = true;
+                    item.Selected = item.Value.ToString() == IoTBackgroundService.VariableSelectDeviceId.ToString();
 
                 }
             }
diff --git a/IoTGateway/Areas/BasicData/Views/DeviceConfig/Edit.cshtml b/IoTGateway/Areas/BasicData/Views/DeviceConfig/Edit.cshtml
index 831f956..80d772f 100644
--- a/IoTGateway/Areas/BasicData/Views/DeviceConfig/Edit.cshtml
+++ b/IoTGateway/Areas/BasicData/Views/DeviceConfig/Edit.cshtml
@@ -5,7 +5,7 @@
     <wt:row items-per-row="ItemsPerRowEnum.Two">
         @*<wt:textbox field="Entity.DeviceConfigName" />*@
         @{
-            if (Model.Entity.EnumInfo != null)
+            if (!string.IsNullOrEmpty(Model.Entity.EnumInfo))
             {
                 <wt:combobox field="Entity.Value" items="AllTypes" />
             }
diff --git a/IoTGateway/nlog.config b/IoTGateway/nlog.config
index 0783d6e..8038952 100644
--- a/IoTGateway/nlog.config
+++ b/IoTGateway/nlog.config
@@ -2,7 +2,7 @@
 <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       autoReload="true"
-      internalLogLevel="Info"
+      internalLogLevel="Error"
       internalLogFile="./logs/internal-nlog-AspNetCore.txt">
 
 	<!-- enable asp.net core layout renderers -->
diff --git a/IoTGateway/wwwroot/layui/lay/modules/tree.js b/IoTGateway/wwwroot/layui/lay/modules/tree.js
index 726b916..03d1896 100644
--- a/IoTGateway/wwwroot/layui/lay/modules/tree.js
+++ b/IoTGateway/wwwroot/layui/lay/modules/tree.js
@@ -201,8 +201,8 @@ layui.define('form', function(exports){
               if(options.isJump && item.href){
                 return '<a href="'+ item.href +'" target="_blank" class="'+ ELEM_TEXT +'">'+ (item.title || item.label || options.text.defaultNodeName) +'</a>';
               } else {
-                  return '<span class="' + ELEM_TEXT + (item.disabled ? ' ' + DISABLED : '') + '"><i class="layui-icon ' + (item.icon || '') + '"></i>' + (item.title || item.label || options.text.defaultNodeName) + '</span>';
-                //return '<span class="' + ELEM_TEXT + (item.disabled ? ' ' + DISABLED : '') + '">' + (item.title || item.label || options.text.defaultNodeName) + '</span>';
+                  return '<span class="' + ELEM_TEXT + (item.disabled ? ' ' + DISABLED : '') + '"><i class="iconfont ' + (item.icon || '') + '"></i>' + (item.title || item.label || options.text.defaultNodeName) + '</span>';
+
               }
             }()
       ,'</div>'
diff --git a/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/Models/LayuiTreeItem.cs b/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/Models/LayuiTreeItem.cs
index 401b22f..84c5889 100644
--- a/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/Models/LayuiTreeItem.cs
+++ b/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/Models/LayuiTreeItem.cs
@@ -10,6 +10,9 @@ namespace WalkingTec.Mvvm.TagHelpers.LayUI
         [JsonPropertyName("title")]
         public string Title { get; set; }
 
+        [JsonPropertyName("icon")]
+        public string Icon { get; set; }
+
         [JsonPropertyName("id")]
         public string Id { get; set; }
 
diff --git a/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/TreeContainerTagHelper.cs b/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/TreeContainerTagHelper.cs
index a6dd35d..b0c6ba4 100644
--- a/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/TreeContainerTagHelper.cs
+++ b/WalkingTec.Mvvm/WalkingTec.Mvvm.TagHelpers.LayUI/TreeContainerTagHelper.cs
@@ -176,6 +176,7 @@ layui.use(['tree'],function(){{
                 {
                     Id = s.Value.ToString(),
                     Title = s.Text,
+                    Icon = s.Icon,
                     Url = s.Url,
                     Expand = s.Expended,
                     Level = level,