diff --git a/app/src/main/java/io/legado/app/constant/Bus.kt b/app/src/main/java/io/legado/app/constant/Bus.kt
index 08500bfa6..67e6ee84e 100644
--- a/app/src/main/java/io/legado/app/constant/Bus.kt
+++ b/app/src/main/java/io/legado/app/constant/Bus.kt
@@ -16,4 +16,5 @@ object Bus {
     const val AUDIO_NEXT = "audioNext"
     const val AUDIO_STATE = "audioState"
     const val AUDIO_PROGRESS = "audioProgress"
+    const val AUDIO_SIZE = "audioSize"
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/service/AudioPlayService.kt b/app/src/main/java/io/legado/app/service/AudioPlayService.kt
index 0a2c23e4d..e5c934d66 100644
--- a/app/src/main/java/io/legado/app/service/AudioPlayService.kt
+++ b/app/src/main/java/io/legado/app/service/AudioPlayService.kt
@@ -130,6 +130,7 @@ class AudioPlayService : BaseService(),
     override fun onPrepared(mp: MediaPlayer?) {
         if (pause) return
         mp?.start()
+        postEvent(Bus.AUDIO_PROGRESS, mp?.duration)
     }
 
     override fun onError(mp: MediaPlayer?, what: Int, extra: Int): Boolean {
diff --git a/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt b/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt
index be1819608..907df608d 100644
--- a/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt
@@ -23,6 +23,7 @@ class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_a
     override val viewModel: AudioPlayViewModel
         get() = getViewModel(AudioPlayViewModel::class.java)
 
+    private var adjustProgress = false
     private var status = Status.STOP
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
@@ -55,10 +56,11 @@ class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_a
             }
 
             override fun onStartTrackingTouch(seekBar: SeekBar?) {
-
+                adjustProgress = true
             }
 
             override fun onStopTrackingTouch(seekBar: SeekBar?) {
+                adjustProgress = false
                 AudioPlay.upProgress(this@AudioPlayActivity, player_progress.progress)
             }
         })
@@ -97,8 +99,10 @@ class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_a
             status = it
         }
         observeEvent<Int>(Bus.AUDIO_PROGRESS) {
-            if (!player_progress.isInTouchMode)
-                player_progress.progress = it
+            if (!adjustProgress) player_progress.progress = it
+        }
+        observeEvent<Int>(Bus.AUDIO_SIZE) {
+            player_progress.max = it
         }
     }
 }
\ No newline at end of file