diff --git a/.dart_tool/flutter_gen/gen_l10n/l10n.dart b/.dart_tool/flutter_gen/gen_l10n/l10n.dart
index da7ae6dd8..adfd04e42 100644
--- a/.dart_tool/flutter_gen/gen_l10n/l10n.dart
+++ b/.dart_tool/flutter_gen/gen_l10n/l10n.dart
@@ -182,6 +182,12 @@ abstract class S {
   /// **'Auto'**
   String get auto;
 
+  /// No description provided for @autoBackupConflict.
+  ///
+  /// In en, this message translates to:
+  /// **'Only one automatic backup can be turned on at the same time.'**
+  String get autoBackupConflict;
+
   /// No description provided for @autoCheckUpdate.
   ///
   /// In en, this message translates to:
@@ -1574,6 +1580,12 @@ abstract class S {
   /// **'No paired Apple Watch'**
   String get watchNotPaired;
 
+  /// No description provided for @webdavSettingEmpty.
+  ///
+  /// In en, this message translates to:
+  /// **'Webdav setting is empty'**
+  String get webdavSettingEmpty;
+
   /// No description provided for @whenOpenApp.
   ///
   /// In en, this message translates to:
diff --git a/.dart_tool/flutter_gen/gen_l10n/l10n_de.dart b/.dart_tool/flutter_gen/gen_l10n/l10n_de.dart
index 95539b9c1..da93796d8 100644
--- a/.dart_tool/flutter_gen/gen_l10n/l10n_de.dart
+++ b/.dart_tool/flutter_gen/gen_l10n/l10n_de.dart
@@ -48,6 +48,9 @@ class SDe extends S {
   @override
   String get auto => 'System folgen';
 
+  @override
+  String get autoBackupConflict => 'Es kann nur eine automatische Sicherung gleichzeitig aktiviert werden.';
+
   @override
   String get autoCheckUpdate => 'Aktualisierung automatisch prüfen';
 
@@ -782,6 +785,9 @@ class SDe extends S {
   @override
   String get watchNotPaired => 'Keine gekoppelte Apple Watch';
 
+  @override
+  String get webdavSettingEmpty => 'Webdav-Einstellungen sind leer';
+
   @override
   String get whenOpenApp => 'Beim Öffnen der App';
 
diff --git a/.dart_tool/flutter_gen/gen_l10n/l10n_en.dart b/.dart_tool/flutter_gen/gen_l10n/l10n_en.dart
index bea6d8ea1..357c28210 100644
--- a/.dart_tool/flutter_gen/gen_l10n/l10n_en.dart
+++ b/.dart_tool/flutter_gen/gen_l10n/l10n_en.dart
@@ -48,6 +48,9 @@ class SEn extends S {
   @override
   String get auto => 'Auto';
 
+  @override
+  String get autoBackupConflict => 'Only one automatic backup can be turned on at the same time.';
+
   @override
   String get autoCheckUpdate => 'Auto check update';
 
@@ -782,6 +785,9 @@ class SEn extends S {
   @override
   String get watchNotPaired => 'No paired Apple Watch';
 
+  @override
+  String get webdavSettingEmpty => 'Webdav setting is empty';
+
   @override
   String get whenOpenApp => 'When opening the app';
 
diff --git a/.dart_tool/flutter_gen/gen_l10n/l10n_id.dart b/.dart_tool/flutter_gen/gen_l10n/l10n_id.dart
index e50027f83..33cbace95 100644
--- a/.dart_tool/flutter_gen/gen_l10n/l10n_id.dart
+++ b/.dart_tool/flutter_gen/gen_l10n/l10n_id.dart
@@ -48,6 +48,9 @@ class SId extends S {
   @override
   String get auto => 'Auto';
 
+  @override
+  String get autoBackupConflict => 'Hanya satu pencadangan otomatis yang dapat diaktifkan pada saat yang bersamaan.';
+
   @override
   String get autoCheckUpdate => 'Periksa pembaruan otomatis';
 
@@ -782,6 +785,9 @@ class SId extends S {
   @override
   String get watchNotPaired => 'Tidak ada Apple Watch yang dipasangkan';
 
+  @override
+  String get webdavSettingEmpty => 'Pengaturan webdav kosong';
+
   @override
   String get whenOpenApp => 'Saat membuka aplikasi';
 
diff --git a/.dart_tool/flutter_gen/gen_l10n/l10n_zh.dart b/.dart_tool/flutter_gen/gen_l10n/l10n_zh.dart
index bd2c0203e..12367d09a 100644
--- a/.dart_tool/flutter_gen/gen_l10n/l10n_zh.dart
+++ b/.dart_tool/flutter_gen/gen_l10n/l10n_zh.dart
@@ -48,6 +48,9 @@ class SZh extends S {
   @override
   String get auto => '自动';
 
+  @override
+  String get autoBackupConflict => '只能同时开启一个自动备份';
+
   @override
   String get autoCheckUpdate => '自动检查更新';
 
@@ -782,6 +785,9 @@ class SZh extends S {
   @override
   String get watchNotPaired => '没有已配对的 Apple Watch';
 
+  @override
+  String get webdavSettingEmpty => 'Webdav 设置项为空';
+
   @override
   String get whenOpenApp => '当打开 App 时';
 
@@ -840,6 +846,9 @@ class SZhTw extends SZh {
   @override
   String get auto => '自動';
 
+  @override
+  String get autoBackupConflict => '只能同時開啓壹個自動備份';
+
   @override
   String get autoCheckUpdate => '自動檢查更新';
 
@@ -1574,6 +1583,9 @@ class SZhTw extends SZh {
   @override
   String get watchNotPaired => '沒有已配對的 Apple Watch';
 
+  @override
+  String get webdavSettingEmpty => 'Webdav 設置項爲空';
+
   @override
   String get whenOpenApp => '當打開 App 時';
 
diff --git a/lib/l10n/app_de.arb b/lib/l10n/app_de.arb
index 01033bf75..fbe57621d 100644
--- a/lib/l10n/app_de.arb
+++ b/lib/l10n/app_de.arb
@@ -14,6 +14,7 @@
   "attention": "Achtung",
   "authRequired": "Autorisierung erforderlich",
   "auto": "System folgen",
+  "autoBackupConflict": "Es kann nur eine automatische Sicherung gleichzeitig aktiviert werden.",
   "autoCheckUpdate": "Aktualisierung automatisch prüfen",
   "autoConnect": "Automatisch verbinden",
   "autoUpdateHomeWidget": "Home-Widget automatisch aktualisieren",
@@ -246,6 +247,7 @@
   "virtKeyHelpSFTP": "Aktuelles Verzeichnis in SFTP öffnen.",
   "waitConnection": "Bitte warte, bis die Verbindung hergestellt wurde.",
   "watchNotPaired": "Keine gekoppelte Apple Watch",
+  "webdavSettingEmpty": "Webdav-Einstellungen sind leer",
   "whenOpenApp": "Beim Öffnen der App",
   "willTakEeffectImmediately": "Wird sofort angewendet",
   "write": "Schreiben"
diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index 5e10a1e1f..619bed870 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -14,6 +14,7 @@
   "attention": "Attention",
   "authRequired": "Auth required",
   "auto": "Auto",
+  "autoBackupConflict": "Only one automatic backup can be turned on at the same time.",
   "autoCheckUpdate": "Auto check update",
   "autoConnect": "Auto connect",
   "autoUpdateHomeWidget": "Auto update home widget",
@@ -246,6 +247,7 @@
   "virtKeyHelpSFTP": "Open current directory in SFTP.",
   "waitConnection": "Please wait for the connection to be established.",
   "watchNotPaired": "No paired Apple Watch",
+  "webdavSettingEmpty": "Webdav setting is empty",
   "whenOpenApp": "When opening the app",
   "willTakEeffectImmediately": "Will take effect immediately",
   "write": "Write"
diff --git a/lib/l10n/app_id.arb b/lib/l10n/app_id.arb
index 249ae33e2..faaa1f16e 100644
--- a/lib/l10n/app_id.arb
+++ b/lib/l10n/app_id.arb
@@ -14,6 +14,7 @@
   "attention": "Perhatian",
   "authRequired": "Auth diperlukan",
   "auto": "Auto",
+  "autoBackupConflict": "Hanya satu pencadangan otomatis yang dapat diaktifkan pada saat yang bersamaan.",
   "autoCheckUpdate": "Periksa pembaruan otomatis",
   "autoConnect": "Hubungkan otomatis",
   "autoUpdateHomeWidget": "Widget Rumah Pembaruan Otomatis",
@@ -246,6 +247,7 @@
   "virtKeyHelpSFTP": "Buka direktori saat ini di SFTP.",
   "waitConnection": "Harap tunggu koneksi akan dibuat.",
   "watchNotPaired": "Tidak ada Apple Watch yang dipasangkan",
+  "webdavSettingEmpty": "Pengaturan webdav kosong",
   "whenOpenApp": "Saat membuka aplikasi",
   "willTakEeffectImmediately": "Akan segera berlaku",
   "write": "Tulis"
diff --git a/lib/l10n/app_zh.arb b/lib/l10n/app_zh.arb
index e053b6fdd..ec0b95a2e 100644
--- a/lib/l10n/app_zh.arb
+++ b/lib/l10n/app_zh.arb
@@ -14,6 +14,7 @@
   "attention": "注意",
   "authRequired": "需要认证",
   "auto": "自动",
+  "autoBackupConflict": "只能同时开启一个自动备份",
   "autoCheckUpdate": "自动检查更新",
   "autoConnect": "自动连接",
   "autoUpdateHomeWidget": "自动更新桌面小部件",
@@ -246,6 +247,7 @@
   "virtKeyHelpSFTP": "在 SFTP 中打开当前路径。",
   "waitConnection": "请等待连接建立",
   "watchNotPaired": "没有已配对的 Apple Watch",
+  "webdavSettingEmpty": "Webdav 设置项为空",
   "whenOpenApp": "当打开 App 时",
   "willTakEeffectImmediately": "更改将会立即生效",
   "write": "写"
diff --git a/lib/l10n/app_zh_tw.arb b/lib/l10n/app_zh_tw.arb
index b9c348fc8..ff95fe205 100644
--- a/lib/l10n/app_zh_tw.arb
+++ b/lib/l10n/app_zh_tw.arb
@@ -14,6 +14,7 @@
   "attention": "注意",
   "authRequired": "需要認證",
   "auto": "自動",
+  "autoBackupConflict": "只能同時開啓壹個自動備份",
   "autoCheckUpdate": "自動檢查更新",
   "autoConnect": "自動連接",
   "autoUpdateHomeWidget": "自動更新桌面小部件",
@@ -246,6 +247,7 @@
   "virtKeyHelpSFTP": "在 SFTP 中打開當前路徑。",
   "waitConnection": "請等待連接建立",
   "watchNotPaired": "沒有已配對的 Apple Watch",
+  "webdavSettingEmpty": "Webdav 設置項爲空",
   "whenOpenApp": "當打開 App 時",
   "willTakEeffectImmediately": "更改將會立即生效",
   "write": "写"
diff --git a/lib/view/page/backup.dart b/lib/view/page/backup.dart
index 5bbbf36cc..ced7cb195 100644
--- a/lib/view/page/backup.dart
+++ b/lib/view/page/backup.dart
@@ -150,7 +150,14 @@ class BackupPage extends StatelessWidget {
             title: Text(l10n.auto),
             trailing: StoreSwitch(
               prop: Stores.setting.icloudSync,
-              func: (val) async {
+              validator: (p0) {
+                if (p0 && Stores.setting.webdavSync.fetch()) {
+                  context.showSnackBar(l10n.autoBackupConflict);
+                  return false;
+                }
+                return true;
+              },
+              callback: (val) async {
                 if (val) {
                   icloudLoading.value = true;
                   await ICloud.sync();
@@ -273,24 +280,20 @@ class BackupPage extends StatelessWidget {
                     },
                     child: Text(l10n.ok),
                   ),
-                  TextButton(
-                    onPressed: () async {
-                      final result = await Webdav.test(
-                        urlCtrl.text,
-                        userCtrl.text,
-                        pwdCtrl.text,
-                      );
-                      if (result == null) {
-                        context.showSnackBar(l10n.success);
-                      } else {
-                        context.showSnackBar(result);
-                      }
-                    },
-                    child: Text(l10n.test),
-                  ),
                 ],
               );
               if (result == true) {
+                final result = await Webdav.test(
+                  urlCtrl.text,
+                  userCtrl.text,
+                  pwdCtrl.text,
+                );
+                if (result == null) {
+                  context.showSnackBar(l10n.success);
+                } else {
+                  context.showSnackBar(result);
+                  return;
+                }
                 Webdav.changeClient(
                   urlCtrl.text,
                   userCtrl.text,
@@ -306,7 +309,22 @@ class BackupPage extends StatelessWidget {
             title: Text(l10n.auto),
             trailing: StoreSwitch(
               prop: Stores.setting.webdavSync,
-              func: (val) async {
+              validator: (p0) {
+                if (p0) {
+                  if (Stores.setting.webdavUrl.fetch().isEmpty ||
+                      Stores.setting.webdavUser.fetch().isEmpty ||
+                      Stores.setting.webdavPwd.fetch().isEmpty) {
+                    context.showSnackBar(l10n.webdavSettingEmpty);
+                    return false;
+                  }
+                }
+                if (Stores.setting.icloudSync.fetch()) {
+                  context.showSnackBar(l10n.autoBackupConflict);
+                  return false;
+                }
+                return true;
+              },
+              callback: (val) async {
                 if (val) {
                   webdavLoading.value = true;
                   await Webdav.sync();
diff --git a/lib/view/page/setting/entry.dart b/lib/view/page/setting/entry.dart
index 9c53931fd..42b3e164f 100644
--- a/lib/view/page/setting/entry.dart
+++ b/lib/view/page/setting/entry.dart
@@ -339,7 +339,7 @@ class _SettingPageState extends State<SettingPage> {
                   title: Text(l10n.followSystem),
                   trailing: StoreSwitch(
                     prop: _setting.useSystemPrimaryColor,
-                    func: (_) => setState(() {}),
+                    callback: (_) => setState(() {}),
                   ),
                 )
             ];
@@ -747,7 +747,7 @@ class _SettingPageState extends State<SettingPage> {
       title: Text(l10n.fullScreen),
       trailing: StoreSwitch(
         prop: _setting.fullScreen,
-        func: (_) => RebuildNodes.app.rebuild(),
+        callback: (_) => RebuildNodes.app.rebuild(),
       ),
     );
   }
diff --git a/lib/view/page/setting/platform_pub.dart b/lib/view/page/setting/platform_pub.dart
index 906702fc4..109a0979e 100644
--- a/lib/view/page/setting/platform_pub.dart
+++ b/lib/view/page/setting/platform_pub.dart
@@ -30,7 +30,7 @@ class PlatformPublicSettings {
           trailing: can == true
               ? StoreSwitch(
                   prop: Stores.setting.useBioAuth,
-                  func: (val) async {
+                  callback: (val) async {
                     if (val) {
                       Stores.setting.useBioAuth.put(false);
                       return;
diff --git a/lib/view/widget/store_switch.dart b/lib/view/widget/store_switch.dart
index 0f9f3a607..39b0ef8ba 100644
--- a/lib/view/widget/store_switch.dart
+++ b/lib/view/widget/store_switch.dart
@@ -4,9 +4,19 @@ import '../../core/persistant_store.dart';
 
 class StoreSwitch extends StatelessWidget {
   final StorePropertyBase<bool> prop;
-  final void Function(bool)? func;
 
-  const StoreSwitch({super.key, required this.prop, this.func});
+  /// Exec before make change, after validator.
+  final void Function(bool)? callback;
+
+  /// If return false, the switch will not change.
+  final bool Function(bool)? validator;
+
+  const StoreSwitch({
+    super.key,
+    required this.prop,
+    this.callback,
+    this.validator,
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -16,7 +26,8 @@ class StoreSwitch extends StatelessWidget {
         return Switch(
           value: value,
           onChanged: (value) {
-            func?.call(value);
+            if (validator != null && validator?.call(value) != true) return;
+            callback?.call(value);
             prop.put(value);
           },
         );