diff --git a/app/src/main/java/io/legado/app/help/storage/Backup.kt b/app/src/main/java/io/legado/app/help/storage/Backup.kt
index 3d1709f34..8432793ec 100644
--- a/app/src/main/java/io/legado/app/help/storage/Backup.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Backup.kt
@@ -129,14 +129,21 @@ object Backup {
             ensureActive()
             appCtx.getSharedPreferences(backupPath, "config")?.let { sp ->
                 val edit = sp.edit()
+                val aes = BackupAES()
                 appCtx.defaultSharedPreferences.all.forEach { (key, value) ->
                     if (BackupConfig.keyIsNotIgnore(key)) {
-                        when (value) {
-                            is Int -> edit.putInt(key, value)
-                            is Boolean -> edit.putBoolean(key, value)
-                            is Long -> edit.putLong(key, value)
-                            is Float -> edit.putFloat(key, value)
-                            is String -> edit.putString(key, value)
+                        when (key) {
+                            PreferKey.webDavPassword -> {
+                                edit.putString(key, aes.encryptBase64(value.toString()))
+                            }
+
+                            else -> when (value) {
+                                is Int -> edit.putInt(key, value)
+                                is Boolean -> edit.putBoolean(key, value)
+                                is Long -> edit.putLong(key, value)
+                                is Float -> edit.putFloat(key, value)
+                                is String -> edit.putString(key, value)
+                            }
                         }
                     }
                 }
diff --git a/app/src/main/java/io/legado/app/help/storage/BackupAES.kt b/app/src/main/java/io/legado/app/help/storage/BackupAES.kt
new file mode 100644
index 000000000..382ccf8b7
--- /dev/null
+++ b/app/src/main/java/io/legado/app/help/storage/BackupAES.kt
@@ -0,0 +1,9 @@
+package io.legado.app.help.storage
+
+import cn.hutool.crypto.symmetric.AES
+import io.legado.app.help.config.LocalConfig
+import io.legado.app.utils.MD5Utils
+
+class BackupAES : AES(
+    MD5Utils.md5Encode(LocalConfig.password).encodeToByteArray(0, 16)
+)
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/storage/BackupConfig.kt b/app/src/main/java/io/legado/app/help/storage/BackupConfig.kt
index 226725acf..e42cbe170 100644
--- a/app/src/main/java/io/legado/app/help/storage/BackupConfig.kt
+++ b/app/src/main/java/io/legado/app/help/storage/BackupConfig.kt
@@ -45,10 +45,6 @@ object BackupConfig {
         PreferKey.backupPath,
         PreferKey.defaultBookTreeUri,
         PreferKey.webDavDeviceName,
-       // PreferKey.webDavUrl,
-       // PreferKey.webDavDir,
-       // PreferKey.webDavAccount,
-       // PreferKey.webDavPassword,
         PreferKey.launcherIcon,
         PreferKey.bitmapCacheSize,
         PreferKey.webServiceWakeLock,
diff --git a/app/src/main/java/io/legado/app/help/storage/Restore.kt b/app/src/main/java/io/legado/app/help/storage/Restore.kt
index 84f1058f0..cf97995db 100644
--- a/app/src/main/java/io/legado/app/help/storage/Restore.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Restore.kt
@@ -10,7 +10,21 @@ import io.legado.app.constant.AppLog
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.appDb
-import io.legado.app.data.entities.*
+import io.legado.app.data.entities.Book
+import io.legado.app.data.entities.BookGroup
+import io.legado.app.data.entities.BookSource
+import io.legado.app.data.entities.Bookmark
+import io.legado.app.data.entities.DictRule
+import io.legado.app.data.entities.HttpTTS
+import io.legado.app.data.entities.KeyboardAssist
+import io.legado.app.data.entities.ReadRecord
+import io.legado.app.data.entities.ReplaceRule
+import io.legado.app.data.entities.RssSource
+import io.legado.app.data.entities.RssStar
+import io.legado.app.data.entities.RuleSub
+import io.legado.app.data.entities.SearchKeyword
+import io.legado.app.data.entities.Server
+import io.legado.app.data.entities.TxtTocRule
 import io.legado.app.help.DirectLinkUpload
 import io.legado.app.help.LauncherIconHelp
 import io.legado.app.help.book.isLocal
@@ -19,8 +33,20 @@ import io.legado.app.help.config.LocalConfig
 import io.legado.app.help.config.ReadBookConfig
 import io.legado.app.help.config.ThemeConfig
 import io.legado.app.model.localBook.LocalBook
-import io.legado.app.utils.*
+import io.legado.app.utils.ACache
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.GSON
 import io.legado.app.utils.compress.ZipUtils
+import io.legado.app.utils.defaultSharedPreferences
+import io.legado.app.utils.fromJsonArray
+import io.legado.app.utils.getPrefBoolean
+import io.legado.app.utils.getPrefInt
+import io.legado.app.utils.getPrefString
+import io.legado.app.utils.getSharedPreferences
+import io.legado.app.utils.isContentScheme
+import io.legado.app.utils.openInputStream
+import io.legado.app.utils.postEvent
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.delay
@@ -183,14 +209,21 @@ object Restore {
             }
             appCtx.getSharedPreferences(path, "config")?.all?.let { map ->
                 val edit = appCtx.defaultSharedPreferences.edit()
+                val aes = BackupAES()
                 map.forEach { (key, value) ->
                     if (BackupConfig.keyIsNotIgnore(key)) {
-                        when (value) {
-                            is Int -> edit.putInt(key, value)
-                            is Boolean -> edit.putBoolean(key, value)
-                            is Long -> edit.putLong(key, value)
-                            is Float -> edit.putFloat(key, value)
-                            is String -> edit.putString(key, value)
+                        when (key) {
+                            PreferKey.webDavPassword -> {
+                                edit.putString(key, aes.decryptStr(value.toString()))
+                            }
+
+                            else -> when (value) {
+                                is Int -> edit.putInt(key, value)
+                                is Boolean -> edit.putBoolean(key, value)
+                                is Long -> edit.putLong(key, value)
+                                is Float -> edit.putFloat(key, value)
+                                is String -> edit.putString(key, value)
+                            }
                         }
                     }
                 }
diff --git a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
index 9c38a6ab9..e67930fb8 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
@@ -19,6 +19,7 @@ import com.google.android.material.bottomnavigation.BottomNavigationView
 import io.legado.app.BuildConfig
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
+import io.legado.app.constant.AppConst
 import io.legado.app.constant.AppConst.appInfo
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
@@ -228,7 +229,9 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
             okButton {
                 LocalConfig.password = editTextBinding.editView.text.toString()
             }
-            cancelButton()
+            cancelButton {
+                LocalConfig.password = AppConst.androidId
+            }
         }
     }