diff --git a/Assets/Scripts/Framework/OtherKit/LocalizationKit.cs b/Assets/Scripts/Framework/OtherKit/LocalizationKit.cs
index 0de3f1307..86d67fa03 100644
--- a/Assets/Scripts/Framework/OtherKit/LocalizationKit.cs
+++ b/Assets/Scripts/Framework/OtherKit/LocalizationKit.cs
@@ -38,6 +38,30 @@ namespace AibisDream.Framework
 
         public static LocaleKind CurrentLocaleKind => GetLocaleKind(CurrentLanguageCode);
 
+        /// <summary>
+        /// 解析 setting.json 中的 Language：空值表示跟随系统语言，否则使用用户保存的 code。
+        /// </summary>
+        public static string ResolveLanguage(string savedLanguage)
+        {
+            if (!string.IsNullOrWhiteSpace(savedLanguage))
+            {
+                return savedLanguage.Trim();
+            }
+
+            return MapSystemLanguage(Application.systemLanguage);
+        }
+
+        /// <summary>
+        /// 将 Unity 系统语言映射到项目支持的 Locale code。
+        /// </summary>
+        public static string MapSystemLanguage(SystemLanguage lang) => lang switch
+        {
+            SystemLanguage.Chinese or SystemLanguage.ChineseSimplified or SystemLanguage.ChineseTraditional => "zh-Hans",
+            SystemLanguage.Japanese => "ja-JP",
+            SystemLanguage.English => "en",
+            _ => "en",
+        };
+
         static LocalizationKit()
         {
 #if UNITY_EDITOR
diff --git a/Assets/Scripts/Game Loop/SettingLoader.cs b/Assets/Scripts/Game Loop/SettingLoader.cs
index 493703edd..06b3ff6c5 100644
--- a/Assets/Scripts/Game Loop/SettingLoader.cs	
+++ b/Assets/Scripts/Game Loop/SettingLoader.cs	
@@ -43,36 +43,11 @@ namespace AibisDream
                 return;
             }
 
-            // 如果文件不存在，则复制默认设置并根据系统语言设置初始语言值
+            // 如果文件不存在，则复制默认设置（Language 为空表示跟随系统语言）
             var defaultSetting = JsonUtil.ReadJObject(SettingDefaultPath);
-
-            // 根据当前系统语言设置初始语言值
-            string systemLanguage = GetLanguageBySystemLanguage();
-            defaultSetting["Language"] = systemLanguage;
-
-            // 保存设置文件
             JsonUtil.SaveJObject(defaultSetting, SettingPath);
         }
 
-        /// <summary>
-        /// 根据系统语言获取对应的语言代码
-        /// </summary>
-        /// <returns>语言代码：zh-Hans、en、ja-JP，默认返回 en</returns>
-        private string GetLanguageBySystemLanguage()
-        {
-            SystemLanguage systemLang = Application.systemLanguage;
-
-            return systemLang switch
-            {
-                SystemLanguage.Chinese => "zh-Hans",
-                SystemLanguage.ChineseSimplified => "zh-Hans",
-                SystemLanguage.ChineseTraditional => "zh-Hans",
-                SystemLanguage.Japanese => "ja-JP",
-                SystemLanguage.English => "en",
-                _ => "en",
-            };
-        }
-
         private void LoadAllSetting()
         {
             var settingConfig = _container.ReadAll();
@@ -103,8 +78,7 @@ namespace AibisDream
 #endif
                     break;
                 case "Language":
-                    // 确保本地化系统已初始化
-                    LocalizationKit.SwitchLanguage(value);
+                    LocalizationKit.SwitchLanguage(LocalizationKit.ResolveLanguage(value));
                     break;
                 case "OpenTimer":
                     var isTimerOpen = bool.TryParse(value, out var result) ? result : false;
diff --git a/Assets/Scripts/UI/Terminal/TerminalSettingPanel.cs b/Assets/Scripts/UI/Terminal/TerminalSettingPanel.cs
index c7f59fd47..c2f5d5404 100644
--- a/Assets/Scripts/UI/Terminal/TerminalSettingPanel.cs
+++ b/Assets/Scripts/UI/Terminal/TerminalSettingPanel.cs
@@ -1,5 +1,6 @@
 using System;
 using AibisDream;
+using AibisDream.Framework;
 using UnityEngine;
 
 namespace AibisDream.UI
@@ -145,7 +146,7 @@ namespace AibisDream.UI
 
             if (settings.TryGetValue("Language", out var language))
             {
-                languageOption?.SetValue(language);
+                languageOption?.SetValue(LocalizationKit.ResolveLanguage(language));
             }
         }
 
diff --git a/Assets/StreamingAssets/Config/setting.json b/Assets/StreamingAssets/Config/setting.json
index 4b7785746..60298a101 100644
--- a/Assets/StreamingAssets/Config/setting.json
+++ b/Assets/StreamingAssets/Config/setting.json
@@ -1,6 +1,6 @@
 {
   "Volume": "0.20",
-  "Language": "zh-Hans",
+  "Language": "",
   "WindowMode": "FullScreen",
   "TextSpeed": "3.0",
   "OpenTimer": false,