diff --git a/STranslate/Helper/ConfigHelper.cs b/STranslate/Helper/ConfigHelper.cs
index cf2aad0..9866b56 100644
--- a/STranslate/Helper/ConfigHelper.cs
+++ b/STranslate/Helper/ConfigHelper.cs
@@ -46,14 +46,13 @@ namespace STranslate.Helper
         /// <summary>
         /// 配置文件
         /// </summary>
-        private static string _CnfName { get => $"{_ApplicationData}\\stranslate.json"; }
+        private static string _CnfName => $"{_ApplicationData}\\{_AppName.ToLower()}.json";
 
         /// <summary>
         /// C:\Users\user\AppData\Local\STranslate
         /// </summary>
-        private static readonly string _ApplicationData
-            = $"{Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)}"
-            + $"\\{Path.GetFileNameWithoutExtension(Assembly.GetEntryAssembly().Location)}";
+        private static string _ApplicationData => $"{Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)}\\{_AppName}";
+        private static readonly string _AppName = Path.GetFileNameWithoutExtension(Assembly.GetEntryAssembly().Location);
         private static ConfigHelper _Instance;
         public static ConfigHelper Instance { get => _Instance ?? (_Instance = new ConfigHelper()); }
     }
diff --git a/STranslate/MainWindow.xaml b/STranslate/MainWindow.xaml
index 8879597..9fcaaee 100644
--- a/STranslate/MainWindow.xaml
+++ b/STranslate/MainWindow.xaml
@@ -48,8 +48,8 @@
                 <ComboBox Style="{DynamicResource cmbstyle}"
                           Margin="0,5,10,0"
                           ItemsSource="{Binding TranslationInterface}"
+                          SelectedItem="{Binding SelectedTranslationInterface, Mode=TwoWay, NotifyOnSourceUpdated=True}"
                           DisplayMemberPath="Name"
-                          SelectedItem="{Binding SelectedTranslationInterface}"
                           HorizontalAlignment="Right"/>
             </Grid>
             
diff --git a/STranslate/Model/ConfigModel.cs b/STranslate/Model/ConfigModel.cs
index 5a75f71..de9a49d 100644
--- a/STranslate/Model/ConfigModel.cs
+++ b/STranslate/Model/ConfigModel.cs
@@ -15,18 +15,19 @@ namespace STranslate.Model
 
         public ConfigModel InitialConfig()
         {
-            var defaultServer = new Server
-            {
-                Name = "zggsong",
-                Api = "https://zggsong.cn/tt"
-            };
             return new ConfigModel
             {
                 IsBright = true,
-                SelectServer = defaultServer,
+                SourceLanguage = LanguageEnum.AUTO,
+                TargetLanguage = LanguageEnum.AUTO,
+                SelectServer = 0,
                 Servers = new Server[]
                 {
-                    defaultServer,
+                    new Server
+                    {
+                        Name = "zggsong",
+                        Api = "https://zggsong.cn/tt"
+                    },
                     new Server
                     {
                         Name = "zu1k",
@@ -47,8 +48,14 @@ namespace STranslate.Model
         [JsonProperty("isBright")]
         public bool IsBright { get; set; }
 
+        [JsonProperty("sourceLanguage")]
+        public LanguageEnum SourceLanguage { get; set; }
+
+        [JsonProperty("targetLanguage")]
+        public LanguageEnum TargetLanguage { get; set; }
+
         [JsonProperty("selectServer")]
-        public Server SelectServer { get; set; }
+        public int SelectServer { get; set; }
 
         /// <summary>
         /// 服务
diff --git a/STranslate/ViewModel/MainVM.cs b/STranslate/ViewModel/MainVM.cs
index be4f450..fec6a84 100644
--- a/STranslate/ViewModel/MainVM.cs
+++ b/STranslate/ViewModel/MainVM.cs
@@ -24,10 +24,6 @@ namespace STranslate.ViewModel
                 Task.Delay(3000);
                 Environment.Exit(-1);
             }
-            InputCombo = LanguageEnumDict.Keys.ToList();
-            InputComboSelected = LanguageEnum.AUTO.GetDescription();
-            OutputCombo = LanguageEnumDict.Keys.ToList();
-            OutputComboSelected = LanguageEnum.AUTO.GetDescription();
 
             //复制输入
             CopyInputCmd = new RelayCommand((_) => true, (_) =>
@@ -83,14 +79,27 @@ namespace STranslate.ViewModel
         {
             try
             {
+                InputCombo = LanguageEnumDict.Keys.ToList();
+                OutputCombo = LanguageEnumDict.Keys.ToList();
                 GlobalConfig = ConfigHelper.Instance.ReadConfig<ConfigModel>();
                 //更新服务
                 TranslationInterface = GlobalConfig.Servers.ToList();
 
                 if (TranslationInterface.Count < 1) throw new Exception("尚未配置任何翻译接口服务");
 
-                //初始化接口
-                SelectedTranslationInterface = GlobalConfig.SelectServer;
+                try
+                {
+                    //配置读取接口
+                    SelectedTranslationInterface = TranslationInterface[GlobalConfig.SelectServer];
+                }
+                catch (Exception ex)
+                {
+                    throw new Exception($"配置文件选择服务索引出错, 请修改配置文件后重试", ex);
+                }
+
+                //从配置读取source target
+                InputComboSelected = GlobalConfig.SourceLanguage.GetDescription();
+                OutputComboSelected = GlobalConfig.TargetLanguage.GetDescription();
 
                 return true;
             }
@@ -130,18 +139,8 @@ namespace STranslate.ViewModel
             {
                 return new Tuple<string, string>(LanguageEnum.ZH.GetDescription(), LanguageEnum.EN.GetDescription());
             }
-#if false
-            //如果输入是中文
-            if (Regex.IsMatch(text, @"^[\u4e00-\u9fa5]+$"))
-            {
-                return new Tuple<string, string>(LanguageEnum.ZH.GetDescription(), LanguageEnum.EN.GetDescription());
-            }
-            else
-            {
-                return new Tuple<string, string>(LanguageEnum.EN.GetDescription(), LanguageEnum.ZH.GetDescription());
-            }
-#endif
         }
+
         /// <summary>
         /// 翻译
         /// </summary>
@@ -268,7 +267,7 @@ namespace STranslate.ViewModel
         /// </summary>
         private List<Server> _TranslationInterface;
         public List<Server> TranslationInterface { get => _TranslationInterface; set => UpdateProperty(ref _TranslationInterface, value); }
-        
+
         private Server _SelectedTranslationInterface;
         public Server SelectedTranslationInterface { get => _SelectedTranslationInterface; set => UpdateProperty(ref _SelectedTranslationInterface, value); }
         private static Dictionary<string, LanguageEnum> LanguageEnumDict { get => Util.Util.GetEnumList<LanguageEnum>(); }