diff --git a/app/src/main/java/io/legado/app/service/help/AudioPlay.kt b/app/src/main/java/io/legado/app/service/help/AudioPlay.kt
index ca6896715..40fd0ca35 100644
--- a/app/src/main/java/io/legado/app/service/help/AudioPlay.kt
+++ b/app/src/main/java/io/legado/app/service/help/AudioPlay.kt
@@ -18,6 +18,7 @@ object AudioPlay {
     var chapterSize = 0
     var durChapterIndex = 0
     var durPageIndex = 0
+    var speed: Float = 1f
     var webBook: WebBook? = null
     val loadingChapters = arrayListOf<Int>()
 
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 0c34c05bb..05d2fb333 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
@@ -3,6 +3,7 @@ package io.legado.app.ui.audio
 import android.app.Activity
 import android.content.Intent
 import android.graphics.drawable.Drawable
+import android.os.Build
 import android.os.Bundle
 import android.widget.SeekBar
 import androidx.lifecycle.Observer
@@ -19,10 +20,7 @@ import io.legado.app.lib.dialogs.noButton
 import io.legado.app.lib.dialogs.okButton
 import io.legado.app.service.help.AudioPlay
 import io.legado.app.ui.chapterlist.ChapterListActivity
-import io.legado.app.utils.applyTint
-import io.legado.app.utils.getViewModel
-import io.legado.app.utils.observeEvent
-import io.legado.app.utils.observeEventSticky
+import io.legado.app.utils.*
 import kotlinx.android.synthetic.main.activity_audio_play.*
 import kotlinx.android.synthetic.main.view_title_bar.*
 import org.apache.commons.lang3.time.DateFormatUtils
@@ -83,6 +81,10 @@ class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_a
                 )
             }
         }
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
+            iv_fast_rewind.invisible()
+            iv_fast_forward.invisible()
+        }
         iv_fast_forward.onClick {
 
         }