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 53d9a4279..a7fce4b21 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
@@ -4,21 +4,19 @@ import android.content.Context
 import android.net.Uri
 import androidx.documentfile.provider.DocumentFile
 import io.legado.app.App
-import io.legado.app.R
 import io.legado.app.help.FileHelp
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.utils.DocumentUtils
 import io.legado.app.utils.FileUtils
 import io.legado.app.utils.GSON
 import org.jetbrains.anko.defaultSharedPreferences
-import org.jetbrains.anko.doAsync
-import org.jetbrains.anko.toast
-import org.jetbrains.anko.uiThread
 import java.io.File
 
 
 object Backup {
 
+    val backupPath = App.INSTANCE.filesDir.absolutePath + File.separator + "backup"
+
     val defaultPath by lazy {
         FileUtils.getSdCardPath() + File.separator + "YueDu"
     }
@@ -31,134 +29,42 @@ object Backup {
         legadoPath + File.separator + "Export"
     }
 
-    fun backup(context: Context, uri: Uri) {
-        DocumentFile.fromTreeUri(context, uri)?.listFiles()?.forEach { doc ->
-            when (doc.name) {
-                "bookshelf.json" -> App.db.bookDao().allBooks.let {
-                    if (it.isNotEmpty()) {
-                        val json = GSON.toJson(it)
-                        DocumentUtils.writeText(context, json, doc.uri)
-                    }
-                }
-                "bookGroup.json" -> App.db.bookGroupDao().all().let {
-                    if (it.isNotEmpty()) {
-                        val json = GSON.toJson(it)
-                        DocumentUtils.writeText(context, json, doc.uri)
-                    }
-                }
-                "bookSource.json" -> App.db.bookSourceDao().all.let {
-                    if (it.isNotEmpty()) {
-                        val json = GSON.toJson(it)
-                        DocumentUtils.writeText(context, json, doc.uri)
-                    }
-                }
-                "rssSource.json" -> App.db.rssSourceDao().all.let {
-                    if (it.isNotEmpty()) {
-                        val json = GSON.toJson(it)
-                        DocumentUtils.writeText(context, json, doc.uri)
-                    }
-                }
-                "replaceRule.json" -> App.db.replaceRuleDao().all.let {
-                    if (it.isNotEmpty()) {
-                        val json = GSON.toJson(it)
-                        DocumentUtils.writeText(context, json, doc.uri)
-                    }
-                }
-                ReadBookConfig.readConfigFileName -> GSON.toJson(ReadBookConfig.configList)?.let {
-                    DocumentUtils.writeText(context, it, doc.uri)
-                }
-                "config.xml" -> {
-
-                }
-            }
-        }
-    }
-
-    private fun pBackup(path: String = legadoPath) {
-        backupBookshelf(path)
-        backupBookGroup(path)
-        backupBookSource(path)
-        backupRssSource(path)
-        backupReplaceRule(path)
-        backupReadConfig(path)
-        backupPreference(path)
-        WebDavHelp.backUpWebDav(path)
-    }
-
-    fun backup() {
-        doAsync {
-            pBackup()
-            uiThread {
-                App.INSTANCE.toast(R.string.backup_success)
-            }
-        }
-    }
-
-    fun autoBackup() {
-        doAsync {
-            pBackup()
-        }
-    }
-
-    private fun backupBookshelf(path: String) {
+    fun backup(context: Context, uri: Uri?) {
         App.db.bookDao().allBooks.let {
             if (it.isNotEmpty()) {
                 val json = GSON.toJson(it)
-                val file = FileHelp.getFile(path + File.separator + "bookshelf.json")
-                file.writeText(json)
+                FileHelp.getFile(backupPath + File.separator + "bookshelf.json").writeText(json)
             }
         }
-    }
-
-    private fun backupBookGroup(path: String) {
         App.db.bookGroupDao().all().let {
             if (it.isNotEmpty()) {
                 val json = GSON.toJson(it)
-                val file = FileHelp.getFile(path + File.separator + "bookGroup.json")
-                file.writeText(json)
+                FileHelp.getFile(backupPath + File.separator + "bookGroup.json").writeText(json)
             }
         }
-    }
-
-    private fun backupBookSource(path: String) {
         App.db.bookSourceDao().all.let {
             if (it.isNotEmpty()) {
                 val json = GSON.toJson(it)
-                val file = FileHelp.getFile(path + File.separator + "bookSource.json")
-                file.writeText(json)
+                FileHelp.getFile(backupPath + File.separator + "bookSource.json").writeText(json)
             }
         }
-    }
-
-    private fun backupRssSource(path: String) {
         App.db.rssSourceDao().all.let {
             if (it.isNotEmpty()) {
                 val json = GSON.toJson(it)
-                val file = FileHelp.getFile(path + File.separator + "rssSource.json")
-                file.writeText(json)
+                FileHelp.getFile(backupPath + File.separator + "rssSource.json").writeText(json)
             }
         }
-    }
-
-    private fun backupReplaceRule(path: String) {
         App.db.replaceRuleDao().all.let {
             if (it.isNotEmpty()) {
                 val json = GSON.toJson(it)
-                val file = FileHelp.getFile(path + File.separator + "replaceRule.json")
-                file.writeText(json)
+                FileHelp.getFile(backupPath + File.separator + "replaceRule.json").writeText(json)
             }
         }
-    }
-
-    private fun backupReadConfig(path: String) {
         GSON.toJson(ReadBookConfig.configList)?.let {
-            FileHelp.getFile(path + File.separator + ReadBookConfig.readConfigFileName)
+            FileHelp.getFile(backupPath + File.separator + ReadBookConfig.readConfigFileName)
                 .writeText(it)
         }
-    }
-
-    private fun backupPreference(path: String) {
-        Preferences.getSharedPreferences(App.INSTANCE, path, "config")?.let { sp ->
+        Preferences.getSharedPreferences(App.INSTANCE, backupPath, "config")?.let { sp ->
             val edit = sp.edit()
             App.INSTANCE.defaultSharedPreferences.all.map {
                 when (val value = it.value) {
@@ -172,6 +78,33 @@ object Backup {
             }
             edit.commit()
         }
+        WebDavHelp.backUpWebDav(backupPath)
+        if (uri != null) {
+            copyBackup(context, uri)
+        }
+    }
+
+    private fun copyBackup(context: Context, uri: Uri) {
+        DocumentFile.fromTreeUri(context, uri)?.let { treeDoc ->
+            val fileNames = arrayOf(
+                "bookshelf.json",
+                "bookGroup.json",
+                "bookSource.json",
+                "rssSource.json",
+                "replaceRule.json",
+                ReadBookConfig.readConfigFileName,
+                "config.xml"
+            )
+            for (fileName in fileNames) {
+                treeDoc.createFile("text/plain", fileName)?.let { doc ->
+                    DocumentUtils.writeText(
+                        context,
+                        FileHelp.getFile(backupPath + File.separator + fileName).readText(),
+                        doc.uri
+                    )
+                }
+            }
+        }
     }
 
 }
\ No newline at end of file
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 76874e612..0a6ca93c1 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
@@ -33,6 +33,9 @@ import io.legado.app.ui.main.my.MyFragment
 import io.legado.app.ui.main.rss.RssFragment
 import io.legado.app.utils.*
 import kotlinx.android.synthetic.main.activity_main.*
+import kotlinx.coroutines.Dispatchers.IO
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
     BottomNavigationView.OnNavigationItemSelectedListener,
@@ -123,9 +126,15 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
 
     override fun finish() {
         if (!BuildConfig.DEBUG) {
-            Backup.autoBackup()
+            launch {
+                withContext(IO) {
+                    backup()
+                }
+                super.finish()
+            }
+        } else {
+            super.finish()
         }
-        super.finish()
     }
 
     override fun onDestroy() {
@@ -183,7 +192,7 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
             PermissionsCompat.Builder(this)
                 .addPermissions(*Permissions.Group.STORAGE)
                 .rationale(R.string.tip_perm_request_storage)
-                .onGranted { Backup.backup() }
+                .onGranted { Backup.backup(this, null) }
                 .request()
         }
     }