diff --git a/messages/en.json b/messages/en.json
index 005c4f7e..c2ff7b34 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -303,6 +303,7 @@
         "description": "WebDAV is only used as a backup solution and does not support auto-sync, history rollback, and other features.",
         "backupTo": "Backup to WebDAV",
         "syncFrom": "Sync from WebDAV",
+        "testConnection": "Test Connection",
         "serverUrl": "WebDAV Server URL",
         "serverUrlDesc": "Enter the URL of the WebDAV server No path included, e.g: https://dav.example.com http://192.8.8.88:9999",
         "serverUrlPlaceholder": "https://dav.example.com",
@@ -327,6 +328,7 @@
         "success": "Success",
         "failed": "Failed",
         "error": {
+          "testFailed": "Connection test failed",
           "pathNotFound": "Path not found or server inaccessible.",
           "createDirFailed": "Failed to create directory",
           "connectionTimeOut": "Connection timed out, please check network or server."
diff --git a/messages/ja.json b/messages/ja.json
index c4d6ccac..1e7e0a13 100644
--- a/messages/ja.json
+++ b/messages/ja.json
@@ -301,6 +301,7 @@
         "description": "WebDAVはバックアップソリューションとしてのみ使用され、自動同期や履歴ロールバックなどの機能はサポートしていません。",
         "backupTo": "WebDAVにバックアップ",
         "syncFrom": "WebDAVから同期",
+        "testConnection": "接続テスト",
         "serverUrl": "WebDAVサーバーURL",
         "serverUrlDesc": "WebDAVサーバーのURLを入力してくださいパスを含まない、例：https://dav.example.com http://192.8.8.88:9999 ",
         "serverUrlPlaceholder": "https://dav.example.com",
@@ -325,6 +326,7 @@
         "success": "成功",
         "failed": "失敗",
         "error": {
+          "testFailed": "接続テストに失敗しました",
           "pathNotFound": "パスが存在しないか、サーバーにアクセスできません。",
           "createDirFailed": "ディレクトリの作成に失敗しました",
           "connectionTimeOut": "接続タイムアウト、ネットワークまたはサーバーを確認してください。"
diff --git a/messages/zh.json b/messages/zh.json
index 7b9e2de7..e9b44401 100644
--- a/messages/zh.json
+++ b/messages/zh.json
@@ -295,6 +295,7 @@
         "description": "WebDAV 仅作为备用备份方案，不支持自动同步、历史回滚等功能。",
         "backupTo": "备份至 WebDAV",
         "syncFrom": "从 WebDAV 同步",
+        "testConnection": "测试连接",
         "serverUrl": "WebDAV 服务器地址",
         "serverUrlDesc": "输入WebDAV服务器的URL不含路径，例如：https://dav.example.com http://192.8.8.88:9999 ",
         "serverUrlPlaceholder": "https://dav.example.com",
@@ -319,6 +320,7 @@
         "success": "成功",
         "failed": "失败",
         "error": {
+          "testFailed": "连接测试失败",
           "pathNotFound": "路径不存在或服务器无法访问。",
           "createDirFailed": "创建目录失败",
           "connectionTimeOut": "连接超时，请检查网络或服务器。"
diff --git a/src/app/core/setting/ai/check.tsx b/src/app/core/setting/ai/check.tsx
index 65810e84..34aed412 100644
--- a/src/app/core/setting/ai/check.tsx
+++ b/src/app/core/setting/ai/check.tsx
@@ -12,7 +12,7 @@ import { debounce } from "lodash-es"
 // 检测当前 AI 的可用性
 export function AiCheck() {
   const [state, setState] = useState<'ok' | 'error' | 'checking' | 'init'>('init')
-  const { currentAi, aiModelList } = useSettingStore()
+  const { currentAi, aiModelList, aiAutoCheck } = useSettingStore()
   const t = useTranslations('settings.ai')
   const abortControllerRef = useRef<AbortController | null>(null)
   const debouncedCheckRef = useRef<ReturnType<typeof debounce> | null>(null)
@@ -171,12 +171,16 @@ export function AiCheck() {
 
   useEffect(() => {
     const model = aiModelList.find(item => item.key === currentAi)
+    if (!aiAutoCheck) {
+      setState('init')
+      return
+    }
     if (model?.model) {
       debouncedCheckRef.current?.()
     } else {
       setState('init')
     }
-  }, [aiModelList, currentAi])
+  }, [aiModelList, currentAi, aiAutoCheck])
 
   // 组件卸载时清理资源
   useEffect(() => {
diff --git a/src/app/core/setting/ai/page.tsx b/src/app/core/setting/ai/page.tsx
index 1f4e0548..693a0151 100644
--- a/src/app/core/setting/ai/page.tsx
+++ b/src/app/core/setting/ai/page.tsx
@@ -21,6 +21,7 @@ import { v4 } from 'uuid';
 import { confirm } from '@tauri-apps/plugin-dialog';
 import { AiCheck } from "./check";
 import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
+import { Switch } from "@/components/ui/switch";
 import { Label } from "@/components/ui/label";
 import CreateConfig from "./create";
 import { Badge } from "@/components/ui/badge";
@@ -34,7 +35,9 @@ export default function AiPage() {
     currentAi,
     setCurrentAi,
     aiModelList,
-    setAiModelList
+    setAiModelList,
+    aiAutoCheck,
+    setAiAutoCheck
   } = useSettingStore()
   const [apiKey, setApiKey] = useState<string>('')
   const [baseURL, setBaseURL] = useState<string>('')
@@ -256,6 +259,15 @@ export default function AiPage() {
             </div>
           </FormItem>
         </SettingRow>
+        {/* 自动连通性检测开关 */}
+        <SettingRow>
+          <FormItem title={t('autoCheckTitle', { default: '自动连通性检测' })} desc={t('autoCheckDesc', { default: '关闭后不会在切换或修改配置时自动请求测试' })}>
+            <div className="flex items-center gap-3">
+              <Switch checked={aiAutoCheck} onCheckedChange={(v) => setAiAutoCheck(!!v)} />
+              <span className="text-sm text-muted-foreground">{aiAutoCheck ? t('enabled', { default: '已开启' }) : t('disabled', { default: '已关闭' })}</span>
+            </div>
+          </FormItem>
+        </SettingRow>
         {/* 模型名称 */}
         <SettingRow>
           <FormItem title={t('modelTitle')} desc={t('modelTitleDesc')}>
diff --git a/src/app/core/setting/backupSync/webdav-sync.tsx b/src/app/core/setting/backupSync/webdav-sync.tsx
index 8388fc1c..4bf74a09 100644
--- a/src/app/core/setting/backupSync/webdav-sync.tsx
+++ b/src/app/core/setting/backupSync/webdav-sync.tsx
@@ -24,6 +24,7 @@ export default function WebdavSync() {
     syncState,
     backupState,
     createWebDAVDir,
+    testConnection,
   } = useWebDAVStore();
   const { loadFileTree } = useArticleStore()
 
@@ -108,6 +109,15 @@ export default function WebdavSync() {
 
   const [isCreating, setIsCreating] = useState(false);
 
+  const handleTestConnection = async () => {
+    const ok = await testConnection();
+    if (ok) {
+      toast({ title: t("success"), description: t("connectionState.success") });
+    } else {
+      toast({ variant: "destructive", title: t("error.testFailed", { default: "Test failed" } as any), description: t("error.connectionTimeOut") });
+    }
+  };
+
   const handleCreateDirectory = async () => {
     if (!path.trim()) {
       toast({
@@ -158,6 +168,21 @@ export default function WebdavSync() {
                   >
                     {t(`connectionState.${connectionState}`)}
                   </Badge>
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    className="ml-auto"
+                    onClick={handleTestConnection}
+                    disabled={
+                      connectionState === WebDAVConnectionState.checking ||
+                      !url.trim() || !username.trim() || !password.trim()
+                    }
+                  >
+                    {connectionState === WebDAVConnectionState.checking && (
+                      <LoaderCircle className="animate-spin" />
+                    )}
+                    {t("testConnection")}
+                  </Button>
                 </CardTitle>
                 <CardDescription>{t("description")}</CardDescription>
               </CardHeader>
diff --git a/src/stores/setting.ts b/src/stores/setting.ts
index ed3cd762..0d47dffe 100644
--- a/src/stores/setting.ts
+++ b/src/stores/setting.ts
@@ -79,6 +79,10 @@ interface SettingState {
   tesseractList: string
   setTesseractList: (tesseractList: string) => void
 
+  // AI 设置 - 自动连通性检测
+  aiAutoCheck: boolean
+  setAiAutoCheck: (aiAutoCheck: boolean) => Promise<void>
+
   // Github 相关设置
   githubUsername: string
   setGithubUsername: (githubUsername: string) => Promise<void>
@@ -281,6 +285,15 @@ const useSettingStore = create<SettingState>((set, get) => ({
   tesseractList: 'eng,chi_sim',
   setTesseractList: (tesseractList) => set({ tesseractList }),
 
+  // AI 设置 - 自动连通性检测（默认开启）
+  aiAutoCheck: true,
+  setAiAutoCheck: async (aiAutoCheck: boolean) => {
+    const store = await Store.load('store.json');
+    await store.set('aiAutoCheck', aiAutoCheck)
+    await store.save()
+    set({ aiAutoCheck })
+  },
+
   githubUsername: '',
   setGithubUsername: async (githubUsername) => {
     set({ githubUsername })
diff --git a/src/stores/webdav.ts b/src/stores/webdav.ts
index 728e934a..e71b7d0b 100644
--- a/src/stores/webdav.ts
+++ b/src/stores/webdav.ts
@@ -1,5 +1,4 @@
 import { create } from 'zustand'
-import { Store } from '@tauri-apps/plugin-store'
 import { invoke } from '@tauri-apps/api/core'
 
 export enum WebDAVConnectionState {
@@ -37,18 +36,6 @@ interface WebDAVState {
   syncFromWebDAV: () => Promise<string>
 }
 
-// 防抖函数
-function simpleDebounce<T extends (...args: any[]) => any>(
-  func: T,
-  wait: number
-): (...args: Parameters<T>) => void {
-  let timeout: NodeJS.Timeout | null = null
-
-  return (...args: Parameters<T>) => {
-    if (timeout) clearTimeout(timeout)
-    timeout = setTimeout(() => func(...args), wait)
-  }
-}
 
 const useWebDAVStore = create<WebDAVState>((set, get) => {
   let isTestingInProgress = false
@@ -101,56 +88,25 @@ const useWebDAVStore = create<WebDAVState>((set, get) => {
     }
   }
 
-  // 使用防抖
-  const debouncedTest = simpleDebounce(performConnectionTest, 300)
-
   return {
     url: '',
     setUrl: async (url: string) => {
       set({ url })
-      try {
-        const store = await Store.load('store.json')
-        await store.set('webdavUrl', url)
-      } catch (error) {
-        console.error('Failed to save URL:', error)
-      }
-      debouncedTest()
     },
 
     username: '',
     setUsername: async (username: string) => {
       set({ username })
-      try {
-        const store = await Store.load('store.json')
-        await store.set('webdavUsername', username)
-      } catch (error) {
-        console.error('Failed to save username:', error)
-      }
-      debouncedTest()
     },
 
     password: '',
     setPassword: async (password: string) => {
       set({ password })
-      try {
-        const store = await Store.load('store.json')
-        await store.set('webdavPassword', password)
-      } catch (error) {
-        console.error('Failed to save password:', error)
-      }
-      debouncedTest()
     },
 
     path: '',
     setPath: async (path: string) => {
       set({ path })
-      try {
-        const store = await Store.load('store.json')
-        await store.set('webdavPath', path)
-      } catch (error) {
-        console.error('Failed to save path:', error)
-      }
-      debouncedTest()
     },
 
     connectionState: WebDAVConnectionState.fail,
@@ -163,21 +119,8 @@ const useWebDAVStore = create<WebDAVState>((set, get) => {
   },
 
   initWebDAVData: async () => {
-      try {
-    const store = await Store.load('store.json')
-        const url = await store.get<string>('webdavUrl') || ''
-        const username = await store.get<string>('webdavUsername') || ''
-        const password = await store.get<string>('webdavPassword') || ''
-        const path = await store.get<string>('webdavPath') || ''
-
-        set({ url, username, password, path })
-    
-        if (url && username && password) {
-          setTimeout(() => performConnectionTest(), 100)
-        }
-      } catch (error) {
-        console.error('Failed to load WebDAV data:', error)
-      }
+      // 不再从本地存储加载连接参数，也不做自动连测
+      set({ url: '', username: '', password: '', path: '' })
   },
 
   backupState: false,