diff --git a/app/src/main/java/com/fongmi/android/tv/Setting.java b/app/src/main/java/com/fongmi/android/tv/Setting.java
index 0329cace5..04c3620be 100644
--- a/app/src/main/java/com/fongmi/android/tv/Setting.java
+++ b/app/src/main/java/com/fongmi/android/tv/Setting.java
@@ -285,6 +285,14 @@ public class Setting {
         return Math.min(Math.max(Prefers.getInt("danmu_alpha", 90), 10), 100);
     }
 
+    public static void putDanmuSync(boolean sync) {
+        Prefers.put("danmu_sync", sync);
+    }
+
+    public static boolean isDanmuSync() {
+        return Prefers.getBoolean("danmu_sync", false);
+    }
+
     public static void putDanmuAlpha(int alpha) {
         Prefers.put("danmu_alpha", alpha);
     }
diff --git a/app/src/main/java/com/fongmi/android/tv/player/Players.java b/app/src/main/java/com/fongmi/android/tv/player/Players.java
index c9fd7a901..6e814c670 100644
--- a/app/src/main/java/com/fongmi/android/tv/player/Players.java
+++ b/app/src/main/java/com/fongmi/android/tv/player/Players.java
@@ -85,6 +85,7 @@ public class Players implements Player.Listener, IMediaPlayer.Listener, Analytic
     private int player;
     private int error;
     private int retry;
+    private boolean danmuSync;
 
     public static boolean isExo(int type) {
         return type == EXO;
@@ -108,6 +109,7 @@ public class Players implements Player.Listener, IMediaPlayer.Listener, Analytic
         builder = new StringBuilder();
         runnable = ErrorEvent::timeout;
         formatter = new Formatter(builder, Locale.getDefault());
+        danmuSync = Setting.isDanmuSync();
         createSession(activity);
         return this;
     }
@@ -675,7 +677,8 @@ public class Players implements Player.Listener, IMediaPlayer.Listener, Analytic
 
     @Override
     public void updateTimer(DanmakuTimer timer) {
-        if (speed != 1) timer.add((long) (timer.lastInterval() * (speed - 1)));
+        if (danmuSync) App.post(() -> timer.update(getPosition()));
+        else if (speed != 1) timer.add((long) (timer.lastInterval() * (speed - 1)));
     }
 
     @Override
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 2bcf39bd4..b5d1ffd9a 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -93,6 +93,7 @@
     <string name="player_danmu_size">弹幕大小</string>
     <string name="player_danmu_line">弹幕行数</string>
     <string name="player_danmu_alpha">弹幕透明</string>
+    <string name="player_danmu_sync">弹幕同步</string>
     <string name="player_background">后台播放</string>
     <string name="player_flag">线路播放</string>
     <string name="player_episode">选集样式</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 10b5f45b6..454c092f8 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -93,6 +93,7 @@
     <string name="player_danmu_size">彈幕大小</string>
     <string name="player_danmu_line">彈幕行數</string>
     <string name="player_danmu_alpha">彈幕透明</string>
+    <string name="player_danmu_sync">彈幕同步</string>
     <string name="player_background">背景播放</string>
     <string name="player_flag">線路播放</string>
     <string name="player_episode">選集樣式</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 44bb9d253..23a597076 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -93,6 +93,7 @@
     <string name="player_danmu_size">Danmu size</string>
     <string name="player_danmu_line">Danmu line</string>
     <string name="player_danmu_alpha">Danmu alpha</string>
+    <string name="player_danmu_sync">Danmu sync</string>
     <string name="player_background">Background play</string>
     <string name="player_flag">Flag play</string>
     <string name="player_episode">Episode style</string>
diff --git a/app/src/mobile/java/com/fongmi/android/tv/ui/fragment/SettingCustomFragment.java b/app/src/mobile/java/com/fongmi/android/tv/ui/fragment/SettingCustomFragment.java
index 0a5e626b4..bfb8b2db4 100644
--- a/app/src/mobile/java/com/fongmi/android/tv/ui/fragment/SettingCustomFragment.java
+++ b/app/src/mobile/java/com/fongmi/android/tv/ui/fragment/SettingCustomFragment.java
@@ -37,11 +37,19 @@ public class SettingCustomFragment extends BaseFragment {
     @Override
     protected void initView() {
         mBinding.sizeText.setText((size = ResUtil.getStringArray(R.array.select_size))[Setting.getSize()]);
+        mBinding.danmuSyncText.setText(getSwitch(Setting.isDanmuSync()));
     }
 
     @Override
     protected void initEvent() {
+        mBinding.title.setOnLongClickListener(this::onTitle);
         mBinding.size.setOnClickListener(this::setSize);
+        mBinding.danmuSync.setOnClickListener(this::setDanmuSync);
+    }
+
+    private boolean onTitle(View view) {
+        mBinding.danmuSync.setVisibility(View.VISIBLE);
+        return true;
     }
 
     private void setSize(View view) {
@@ -53,5 +61,10 @@ public class SettingCustomFragment extends BaseFragment {
         }).show();
     }
 
+    private void setDanmuSync(View view) {
+        Setting.putDanmuSync(!Setting.isDanmuSync());
+        mBinding.danmuSyncText.setText(getSwitch(Setting.isDanmuSync()));
+    }
+
 
 }
diff --git a/app/src/mobile/res/layout/fragment_setting_custom.xml b/app/src/mobile/res/layout/fragment_setting_custom.xml
index f90c7554c..97b3852c2 100644
--- a/app/src/mobile/res/layout/fragment_setting_custom.xml
+++ b/app/src/mobile/res/layout/fragment_setting_custom.xml
@@ -14,6 +14,7 @@
         app:liftOnScrollColor="@color/transparent">
 
         <TextView
+            android:id="@+id/title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="16dp"
@@ -70,6 +71,34 @@
 
             </LinearLayout>
 
+            <LinearLayout
+                android:id="@+id/danmuSync"
+                android:visibility="gone"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:background="@drawable/shape_item"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginEnd="16dp"
+                    android:text="@string/player_danmu_sync"
+                    android:textColor="@color/white"
+                    android:textSize="16sp" />
+
+                <TextView
+                    android:id="@+id/danmuSyncText"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:gravity="end"
+                    android:textColor="@color/white"
+                    android:textSize="16sp"
+                    tools:text="開" />
+
+            </LinearLayout>
+
         </LinearLayout>
     </androidx.core.widget.NestedScrollView>
 </androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file