diff --git a/packages/frontend/src/components/StyleCustomizer.vue b/packages/frontend/src/components/StyleCustomizer.vue
index 74c9dbc..4b34e8a 100644
--- a/packages/frontend/src/components/StyleCustomizer.vue
+++ b/packages/frontend/src/components/StyleCustomizer.vue
@@ -369,12 +369,22 @@ const handleAddNewTheme = () => {
 };
 
 
-// 开始编辑现有主题
+// 开始编辑主题 (用户主题或基于预设创建副本)
 const handleEditTheme = (theme: TerminalTheme) => {
-    if (theme.isPreset) return; // 不允许编辑预设
     saveThemeError.value = null; // 清除旧错误
-    // 深拷贝以避免直接修改列表中的对象
-    editingTheme.value = JSON.parse(JSON.stringify(theme));
+    if (theme.isPreset) {
+        // 基于预设创建副本
+        const themeCopy = JSON.parse(JSON.stringify(theme));
+        themeCopy._id = undefined; // 清除 ID，表示是新建
+        themeCopy.name = `${theme.name} (${t('styleCustomizer.copySuffix', '副本')})`; // 添加后缀，需要添加翻译 '副本'
+        themeCopy.isPreset = false; // 副本不再是预设
+        editingTheme.value = themeCopy;
+        console.log('创建预设主题副本进行编辑:', editingTheme.value);
+    } else {
+        // 编辑用户自己的主题
+        editingTheme.value = JSON.parse(JSON.stringify(theme));
+        console.log('编辑用户主题:', editingTheme.value);
+    }
     isEditingTheme.value = true;
 };
 
@@ -662,7 +672,7 @@ const formatXtermLabel = (key: keyof ITheme): string => {
                 <li v-for="theme in availableTerminalThemes" :key="theme._id" :class="{ 'preset-theme': theme.isPreset }">
                     <span>{{ theme.name }} {{ theme.isPreset ? `(${t('styleCustomizer.preset')})` : '' }}</span>
                     <div class="theme-actions">
-                        <button @click="handleEditTheme(theme)" :disabled="theme.isPreset">{{ t('common.edit') }}</button>
+                        <button @click="handleEditTheme(theme)">{{ theme.isPreset ? t('styleCustomizer.editAsCopy', '编辑副本') : t('common.edit') }}</button> <!-- 移除 disabled，修改文本，需要添加翻译 '编辑副本' -->
                         <button @click="handleDeleteTheme(theme)" :disabled="theme.isPreset" class="button-danger">{{ t('common.delete') }}</button>
                     </div>
                 </li>
diff --git a/packages/frontend/src/locales/en.json b/packages/frontend/src/locales/en.json
index c6a2f21..684b2b1 100644
--- a/packages/frontend/src/locales/en.json
+++ b/packages/frontend/src/locales/en.json
@@ -86,7 +86,9 @@
     "uiThemeJsonEditorTitle": "UI Theme JSON Editor",
     "uiThemeJsonEditorDesc": "Directly edit the UI theme configuration using JSON. Changes here will reflect in the color pickers above after blurring the textarea.",
     "errorInvalidJsonObject": "Invalid input. Please provide a valid JSON object.",
-    "errorInvalidJsonConfig": "Invalid JSON configuration"
+    "errorInvalidJsonConfig": "Invalid JSON configuration",
+    "editAsCopy": "Edit as Copy",
+    "copySuffix": "Copy"
   },
   "login": {
     "title": "User Login",
diff --git a/packages/frontend/src/locales/zh.json b/packages/frontend/src/locales/zh.json
index 909ffe8..257180a 100644
--- a/packages/frontend/src/locales/zh.json
+++ b/packages/frontend/src/locales/zh.json
@@ -86,7 +86,9 @@
     "uiThemeJsonEditorTitle": "界面主题 JSON 编辑器",
     "uiThemeJsonEditorDesc": "直接使用 JSON 编辑界面主题配置。在此处更改并在文本区域失焦后，上面的颜色选择器将同步更新。",
     "errorInvalidJsonObject": "输入无效。请输入一个有效的 JSON 对象。",
-    "errorInvalidJsonConfig": "无效的 JSON 配置"
+    "errorInvalidJsonConfig": "无效的 JSON 配置",
+    "editAsCopy": "编辑副本",
+    "copySuffix": "副本"
   },
   "login": {
     "title": "用户登录",