diff --git a/src/MaaWpfGui/Extensions/DateTimeExtension.cs b/src/MaaWpfGui/Extensions/DateTimeExtension.cs
index d25053c601..fb9ca898aa 100644
--- a/src/MaaWpfGui/Extensions/DateTimeExtension.cs
+++ b/src/MaaWpfGui/Extensions/DateTimeExtension.cs
@@ -28,13 +28,12 @@ public static class DateTimeExtension
 
     private static readonly Dictionary<string, int> _clientTypeTimezone = new()
     {
-        { string.Empty, 8 },
-        { "Official", 8 },
-        { "Bilibili", 8 },
-        { "txwy", 8 },
-        { "YoStarEN", -7 },
-        { "YoStarJP", 9 },
-        { "YoStarKR", 9 },
+        { Constants.Enums.ClientType.Official, 8 },
+        { Constants.Enums.ClientType.Bilibili, 8 },
+        { Constants.Enums.ClientType.Txwy, 8 },
+        { Constants.Enums.ClientType.EN, -7 },
+        { Constants.Enums.ClientType.JP, 9 },
+        { Constants.Enums.ClientType.KR, 9 },
     };
 
     public static DateTime ToYjDateTime(this DateTime dt)
diff --git a/src/MaaWpfGui/Helper/DataHelper.cs b/src/MaaWpfGui/Helper/DataHelper.cs
index e19bb6f30d..fc565c4a40 100644
--- a/src/MaaWpfGui/Helper/DataHelper.cs
+++ b/src/MaaWpfGui/Helper/DataHelper.cs
@@ -30,20 +30,20 @@ public static class DataHelper
 {
     public static readonly Dictionary<string, string> ClientDirectoryMapper = new()
     {
-        { "zh-tw", "txwy" },
-        { "en-us", "YoStarEN" },
-        { "ja-jp", "YoStarJP" },
-        { "ko-kr", "YoStarKR" },
+        { "zh-tw", ClientType.Txwy },
+        { "en-us", ClientType.EN },
+        { "ja-jp", ClientType.JP },
+        { "ko-kr", ClientType.KR },
     };
 
     public static readonly Dictionary<string, string> ClientLanguageMapper = new()
     {
-        { "Official", "zh-cn" },
-        { "Bilibili", "zh-cn" },
-        { "YoStarEN", "en-us" },
-        { "YoStarJP", "ja-jp" },
-        { "YoStarKR", "ko-kr" },
-        { "txwy", "zh-tw" },
+        { ClientType.Official, "zh-cn" },
+        { ClientType.Bilibili, "zh-cn" },
+        { ClientType.EN, "en-us" },
+        { ClientType.JP, "ja-jp" },
+        { ClientType.KR, "ko-kr" },
+        { ClientType.Txwy, "zh-tw" },
     };
 
     /// <summary>
@@ -191,15 +191,15 @@ public static class DataHelper
     {
         return str switch
         {
-            "zh-cn" or "Official" or "Bilibili" =>
+            "zh-cn" or ClientType.Official or ClientType.Bilibili =>
                 v => CharacterNames.Add(v.Name ?? string.Empty),
-            "zh-tw" or "txwy" =>
+            "zh-tw" or ClientType.Txwy =>
                 v => CharacterNames.Add(v.NameTw ?? string.Empty),
-            "en-us" or "YoStarEN" =>
+            "en-us" or ClientType.EN =>
                 v => CharacterNames.Add(v.NameEn ?? string.Empty),
-            "ja-jp" or "YoStarJP" =>
+            "ja-jp" or ClientType.JP =>
                 v => CharacterNames.Add(v.NameJp ?? string.Empty),
-            "ko-kr" or "YoStarKR" =>
+            "ko-kr" or ClientType.KR =>
                 v => CharacterNames.Add(v.NameKr ?? string.Empty),
             _ =>
                 v => CharacterNames.Add(v.Name ?? string.Empty),
@@ -295,10 +295,10 @@ public static class DataHelper
 
         return clientType switch
         {
-            "zh-tw" or "txwy" => !character.NameTwUnavailable,
-            "en-us" or "YoStarEN" => !character.NameEnUnavailable,
-            "ja-jp" or "YoStarJP" => !character.NameJpUnavailable,
-            "ko-kr" or "YoStarKR" => !character.NameKrUnavailable,
+            "zh-tw" or ClientType.Txwy => !character.NameTwUnavailable,
+            "en-us" or ClientType.EN => !character.NameEnUnavailable,
+            "ja-jp" or ClientType.JP => !character.NameJpUnavailable,
+            "ko-kr" or ClientType.KR => !character.NameKrUnavailable,
             _ => true,
         };
     }
diff --git a/src/MaaWpfGui/Main/AsstProxy.cs b/src/MaaWpfGui/Main/AsstProxy.cs
index a6eda438b4..cb51e90aa7 100644
--- a/src/MaaWpfGui/Main/AsstProxy.cs
+++ b/src/MaaWpfGui/Main/AsstProxy.cs
@@ -474,7 +474,7 @@ public class AsstProxy
         string globalCacheRes = Path.Combine(mainCacheRes, "global", clientType, "resource");
 
         bool loaded;
-        if (clientType is "" or "Official" or "Bilibili")
+        if (clientType is ClientType.Official or ClientType.Bilibili)
         {
             // Read resources first, then read cache
             CopyTasksJson(mainCacheRes);
diff --git a/src/MaaWpfGui/Services/StageManager.cs b/src/MaaWpfGui/Services/StageManager.cs
index 2498a08800..2d652b43e5 100644
--- a/src/MaaWpfGui/Services/StageManager.cs
+++ b/src/MaaWpfGui/Services/StageManager.cs
@@ -22,6 +22,7 @@ using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using HandyControl.Controls;
 using HandyControl.Data;
+using MaaWpfGui.Constants.Enums;
 using MaaWpfGui.Helper;
 using MaaWpfGui.Models;
 using MaaWpfGui.ViewModels.UI;
@@ -114,9 +115,9 @@ public class StageManager
         var clientType = SettingsViewModel.GameSettings.ClientType;
 
         // 官服和B服使用同样的资源
-        if (clientType is "Bilibili" or "")
+        if (clientType is ClientType.Bilibili)
         {
-            clientType = "Official";
+            clientType = ClientType.Official;
         }
 
         return clientType;
@@ -162,7 +163,7 @@ public class StageManager
         var activityJson = await activityTask;
         var tasksJson = await tasksTask;
         JObject? globalTasksJson = null;
-        if (clientType != "Official" && tasksJson != null)
+        if (clientType != ClientType.Official && tasksJson != null)
         {
             var tasksPath = "resource/global/" + clientType + '/' + TasksApi;
 
@@ -177,7 +178,7 @@ public class StageManager
             return null;
         }
 
-        if (clientType != "Official" && globalTasksJson is null)
+        if (clientType != ClientType.Official && globalTasksJson is null)
         {
             return null;
         }
diff --git a/src/MaaWpfGui/ViewModels/UI/SettingsViewModel.cs b/src/MaaWpfGui/ViewModels/UI/SettingsViewModel.cs
index d59b681b45..00259b139b 100644
--- a/src/MaaWpfGui/ViewModels/UI/SettingsViewModel.cs
+++ b/src/MaaWpfGui/ViewModels/UI/SettingsViewModel.cs
@@ -27,6 +27,7 @@ using JetBrains.Annotations;
 using MaaWpfGui.Configuration.Factory;
 using MaaWpfGui.Configuration.Single.MaaTask;
 using MaaWpfGui.Constants;
+using MaaWpfGui.Constants.Enums;
 using MaaWpfGui.Extensions;
 using MaaWpfGui.Helper;
 using MaaWpfGui.Main;
@@ -959,13 +960,12 @@ public class SettingsViewModel : Screen
 
     private static readonly Dictionary<string, string> _serverMapping = new()
     {
-        { string.Empty, "CN" },
-        { "Official", "CN" },
-        { "Bilibili", "CN" },
-        { "YoStarEN", "US" },
-        { "YoStarJP", "JP" },
-        { "YoStarKR", "KR" },
-        { "txwy", "ZH_TW" },
+        { ClientType.Official, "CN" },
+        { ClientType.Bilibili, "CN" },
+        { ClientType.EN, "US" },
+        { ClientType.JP, "JP" },
+        { ClientType.KR, "KR" },
+        { ClientType.Txwy, "ZH_TW" },
     };
 
     /// <summary>
diff --git a/src/MaaWpfGui/ViewModels/UserControl/Settings/GameSettingsUserControlModel.cs b/src/MaaWpfGui/ViewModels/UserControl/Settings/GameSettingsUserControlModel.cs
index 54db824e07..20dc445d7e 100644
--- a/src/MaaWpfGui/ViewModels/UserControl/Settings/GameSettingsUserControlModel.cs
+++ b/src/MaaWpfGui/ViewModels/UserControl/Settings/GameSettingsUserControlModel.cs
@@ -58,15 +58,15 @@ public class GameSettingsUserControlModel : PropertyChangedBase
     /// </summary>
     public List<CombinedData> ClientTypeList { get; } =
         [
-            new() { Display = LocalizationHelper.GetString("Official"), Value = "Official" },
-            new() { Display = LocalizationHelper.GetString("Bilibili"), Value = "Bilibili" },
-            new() { Display = LocalizationHelper.GetString("YoStarEN"), Value = "YoStarEN" },
-            new() { Display = LocalizationHelper.GetString("YoStarJP"), Value = "YoStarJP" },
-            new() { Display = LocalizationHelper.GetString("YoStarKR"), Value = "YoStarKR" },
-            new() { Display = LocalizationHelper.GetString("Txwy"), Value = "txwy" },
+            new() { Display = LocalizationHelper.GetString("Official"), Value = Constants.Enums.ClientType.Official },
+            new() { Display = LocalizationHelper.GetString("Bilibili"), Value = Constants.Enums.ClientType.Bilibili },
+            new() { Display = LocalizationHelper.GetString("YoStarEN"), Value = Constants.Enums.ClientType.EN },
+            new() { Display = LocalizationHelper.GetString("YoStarJP"), Value = Constants.Enums.ClientType.JP },
+            new() { Display = LocalizationHelper.GetString("YoStarKR"), Value = Constants.Enums.ClientType.KR },
+            new() { Display = LocalizationHelper.GetString("Txwy"), Value = Constants.Enums.ClientType.Txwy },
         ];
 
-    private string _clientType = ConfigurationHelper.GetValue(ConfigurationKeys.ClientType, "Official");
+    private string _clientType = ConfigurationHelper.GetValue(ConfigurationKeys.ClientType, Constants.Enums.ClientType.Official);
 
     /// <summary>
     /// Gets or sets the client type.
diff --git a/src/MaaWpfGui/ViewModels/UserControl/TaskQueue/FightSettingsUserControlModel.cs b/src/MaaWpfGui/ViewModels/UserControl/TaskQueue/FightSettingsUserControlModel.cs
index 632c87d0bd..12af449921 100644
--- a/src/MaaWpfGui/ViewModels/UserControl/TaskQueue/FightSettingsUserControlModel.cs
+++ b/src/MaaWpfGui/ViewModels/UserControl/TaskQueue/FightSettingsUserControlModel.cs
@@ -41,7 +41,7 @@ namespace MaaWpfGui.ViewModels.UserControl.TaskQueue;
 /// </summary>
 public class FightSettingsUserControlModel : TaskSettingsViewModel, FightSettingsUserControlModel.ISerialize
 {
-    public static readonly string AnnihilationName = "Annihilation";
+    public const string AnnihilationName = "Annihilation";
     private static readonly ILogger _logger = Log.ForContext<FightSettingsUserControlModel>();
     private static readonly Lock _lock = new();