diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 34c57bb7b..ca5b1e976 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -354,6 +354,7 @@
         <service android:name=".service.TTSReadAloudService" />
         <service android:name=".service.HttpReadAloudService" />
         <service android:name=".service.AudioPlayService" />
+        <service android:name=".service.DownloadService" />
 
         <receiver android:name=".receiver.MediaButtonReceiver">
             <intent-filter>
diff --git a/app/src/main/java/io/legado/app/App.kt b/app/src/main/java/io/legado/app/App.kt
index 98f255c72..37aea552d 100644
--- a/app/src/main/java/io/legado/app/App.kt
+++ b/app/src/main/java/io/legado/app/App.kt
@@ -156,7 +156,7 @@ class App : MultiDexApplication() {
             //用唯一的ID创建渠道对象
             val downloadChannel = NotificationChannel(
                 channelIdDownload,
-                getString(R.string.offline_cache),
+                getString(R.string.action_download),
                 NotificationManager.IMPORTANCE_LOW
             )
             //初始化channel
diff --git a/app/src/main/java/io/legado/app/service/CheckSourceService.kt b/app/src/main/java/io/legado/app/service/CheckSourceService.kt
index e6cbb5966..09900d0d0 100644
--- a/app/src/main/java/io/legado/app/service/CheckSourceService.kt
+++ b/app/src/main/java/io/legado/app/service/CheckSourceService.kt
@@ -24,6 +24,21 @@ class CheckSourceService : BaseService() {
     private val allIds = ArrayList<String>()
     private val checkedIds = ArrayList<String>()
     private var processIndex = 0
+    private val notificationBuilder by lazy {
+        NotificationCompat.Builder(this, AppConst.channelIdReadAloud)
+            .setSmallIcon(R.drawable.ic_network_check)
+            .setOngoing(true)
+            .setContentTitle(getString(R.string.check_book_source))
+            .setContentIntent(
+                IntentHelp.activityPendingIntent<BookSourceActivity>(this, "activity")
+            )
+            .addAction(
+                R.drawable.ic_stop_black_24dp,
+                getString(R.string.cancel),
+                IntentHelp.servicePendingIntent<CheckSourceService>(this, IntentAction.stop)
+            )
+            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+    }
 
     override fun onCreate() {
         super.onCreate()
@@ -105,23 +120,9 @@ class CheckSourceService : BaseService() {
      * 更新通知
      */
     private fun updateNotification(state: Int, msg: String) {
-        val builder = NotificationCompat.Builder(this, AppConst.channelIdReadAloud)
-            .setSmallIcon(R.drawable.ic_network_check)
-            .setOngoing(true)
-            .setContentTitle(getString(R.string.check_book_source))
-            .setContentText(msg)
-            .setContentIntent(
-                IntentHelp.activityPendingIntent<BookSourceActivity>(this, "activity")
-            )
-            .addAction(
-                R.drawable.ic_stop_black_24dp,
-                getString(R.string.cancel),
-                IntentHelp.servicePendingIntent<CheckSourceService>(this, IntentAction.stop)
-            )
-        builder.setProgress(allIds.size, state, false)
-        builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
-        val notification = builder.build()
-        startForeground(112202, notification)
+        notificationBuilder.setContentText(msg)
+        notificationBuilder.setProgress(allIds.size, state, false)
+        startForeground(112202, notificationBuilder.build())
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/service/DownloadService.kt b/app/src/main/java/io/legado/app/service/DownloadService.kt
new file mode 100644
index 000000000..7a77bb7a5
--- /dev/null
+++ b/app/src/main/java/io/legado/app/service/DownloadService.kt
@@ -0,0 +1,46 @@
+package io.legado.app.service
+
+import android.content.Intent
+import androidx.core.app.NotificationCompat
+import io.legado.app.R
+import io.legado.app.base.BaseService
+import io.legado.app.constant.AppConst
+import io.legado.app.constant.IntentAction
+import io.legado.app.help.IntentHelp
+
+class DownloadService : BaseService() {
+
+    private val notificationBuilder by lazy {
+        val builder = NotificationCompat.Builder(this, AppConst.channelIdDownload)
+            .setSmallIcon(R.drawable.ic_download)
+            .setOngoing(true)
+            .setContentTitle(getString(R.string.action_download))
+        builder.addAction(
+            R.drawable.ic_stop_black_24dp,
+            getString(R.string.cancel),
+            IntentHelp.servicePendingIntent<DownloadService>(this, IntentAction.stop)
+        )
+        builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+        updateNotification("准备下载")
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        when (intent?.action) {
+
+        }
+        return super.onStartCommand(intent, flags, startId)
+    }
+
+    /**
+     * 更新通知
+     */
+    private fun updateNotification(content: String) {
+        notificationBuilder.setContentText(content)
+        val notification = notificationBuilder.build()
+        startForeground(AppConst.notificationIdDownload, notification)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
index 59422c186..07f959719 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
@@ -24,9 +24,6 @@ import io.legado.app.constant.AppPattern
 import io.legado.app.data.entities.BookSource
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.*
-import io.legado.app.lib.dialogs.alert
-import io.legado.app.lib.dialogs.noButton
-import io.legado.app.lib.dialogs.okButton
 import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.service.help.CheckSource
@@ -47,7 +44,6 @@ import kotlinx.android.synthetic.main.view_search.*
 import org.jetbrains.anko.startActivity
 import org.jetbrains.anko.startActivityForResult
 import org.jetbrains.anko.toast
-
 import java.io.File
 import java.text.Collator
 
@@ -212,7 +208,6 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
                     else -> data.reversed()
                 }
             }
-            recycler_view.scrollToPosition(0)
             val diffResult = DiffUtil
                 .calculateDiff(DiffCallBack(ArrayList(adapter.getItems()), sourceList))
             adapter.setItems(sourceList, diffResult)