diff --git a/app/src/main/java/com/maary/liveinpeace/Constants.kt b/app/src/main/java/com/maary/liveinpeace/Constants.kt
index 48ffd8d..2c5079b 100644
--- a/app/src/main/java/com/maary/liveinpeace/Constants.kt
+++ b/app/src/main/java/com/maary/liveinpeace/Constants.kt
@@ -14,11 +14,13 @@ class Constants {
         const val PREF_ICON =  "icon_type"
         const val PREF_NOTIFY_TEXT_SIZE = "notification_text_size"
         const val PREF_WATCHING_CONNECTING_TIME = "watching_connecting"
+        const val PREF_ENABLE_EAR_PROTECTION = "ear_protection_enabled"
         // 设置通知 id
         const val ID_NOTIFICATION_SETTINGS = 3
         // 前台通知 id
         const val ID_NOTIFICATION_FOREGROUND = 1
         const val ID_NOTIFICATION_ALERT = 2
+        const val ID_NOTIFICATION_PROTECT = 4
         // 设置图像式图标 Action
         const val ACTION_NAME_SET_IMG = "com.maary.liveinpeace.receiver.SettingsReceiver.SetIconImg"
         // 设置字符式图标 Action
@@ -27,6 +29,8 @@ class Constants {
         const val ACTION_ENABLE_WATCHING = "com.maary.liveinpeace.receiver.SettingsReceiver.EnableWatching"
         // 禁用长时间连接提醒 Action
         const val ACTION_DISABLE_WATCHING = "com.maary.liveinpeace.receiver.SettingsReceiver.DisableWatching"
+        // toggle 设备连接调整音量 Action
+        const val ACTION_TOGGLE_AUTO_CONNECTION_ADJUSTMENT = "com.maary.liveinpeace.receiver.SettingsReceiver.ToggleAdjustment"
         // 设置 Action
         const val ACTION_NAME_SETTINGS = "com.maary.liveinpeace.receiver.SettingsReceiver"
         // 静音广播名称
@@ -40,6 +44,7 @@ class Constants {
         const val CHANNEL_ID_DEFAULT = "LIP_FOREGROUND"
         const val CHANNEL_ID_SETTINGS = "LIP_SETTINGS"
         const val CHANNEL_ID_ALERT = "LIP_ALERT"
+        const val CHANNEL_ID_PROTECT = "LIP_PROTECT"
         // 提醒时间
         const val ALERT_TIME: Long = 2*60*60*1000
         // 延后时间
@@ -48,6 +53,7 @@ class Constants {
         const val ID_NOTIFICATION_GROUP_FORE = "LIP_notification_group_foreground"
         const val ID_NOTIFICATION_GROUP_SETTINGS = "LIP_notification_group_settings"
         const val ID_NOTIFICATION_GROUP_ALERTS = "LIP_notification_group_alerts"
+        const val ID_NOTIFICATION_GROUP_PROTECT = "LIP_notification_group_protect"
         const val PATTERN_DATE_DATABASE = "yyyy-MM-dd"
         const val PATTERN_DATE_BUTTON = "MM/dd"
     }
diff --git a/app/src/main/java/com/maary/liveinpeace/receiver/SettingsReceiver.kt b/app/src/main/java/com/maary/liveinpeace/receiver/SettingsReceiver.kt
index cc6d151..8042468 100644
--- a/app/src/main/java/com/maary/liveinpeace/receiver/SettingsReceiver.kt
+++ b/app/src/main/java/com/maary/liveinpeace/receiver/SettingsReceiver.kt
@@ -12,11 +12,13 @@ import com.maary.liveinpeace.Constants.Companion.ACTION_ENABLE_WATCHING
 import com.maary.liveinpeace.Constants.Companion.ACTION_NAME_SETTINGS
 import com.maary.liveinpeace.Constants.Companion.ACTION_NAME_SET_IMG
 import com.maary.liveinpeace.Constants.Companion.ACTION_NAME_SET_NUM
+import com.maary.liveinpeace.Constants.Companion.ACTION_TOGGLE_AUTO_CONNECTION_ADJUSTMENT
 import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_SETTINGS
 import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_GROUP_SETTINGS
 import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_SETTINGS
 import com.maary.liveinpeace.Constants.Companion.MODE_IMG
 import com.maary.liveinpeace.Constants.Companion.MODE_NUM
+import com.maary.liveinpeace.Constants.Companion.PREF_ENABLE_EAR_PROTECTION
 import com.maary.liveinpeace.Constants.Companion.PREF_ICON
 import com.maary.liveinpeace.Constants.Companion.PREF_WATCHING_CONNECTING_TIME
 import com.maary.liveinpeace.Constants.Companion.SHARED_PREF
@@ -166,6 +168,24 @@ class SettingsReceiver: BroadcastReceiver() {
             }
         }
 
+        if (ACTION_TOGGLE_AUTO_CONNECTION_ADJUSTMENT == p1?.action){
+            val sharedPreferences = p0?.getSharedPreferences(
+                SHARED_PREF,
+                Context.MODE_PRIVATE
+            )
+            if (sharedPreferences != null) {
+                with(sharedPreferences.edit()){
+                    putBoolean(PREF_ENABLE_EAR_PROTECTION,
+                    !sharedPreferences.getBoolean(PREF_ENABLE_EAR_PROTECTION, false)
+                    )
+                    apply()
+                    val foregroundServiceIntent = Intent(p0, ForegroundService::class.java)
+                    p0.stopService(foregroundServiceIntent)
+                    p0.startForegroundService(foregroundServiceIntent)
+                }
+            }
+        }
+
         if (ACTION_CANCEL == p1?.action){
             val notificationManager: NotificationManager =
                 p0?.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
diff --git a/app/src/main/java/com/maary/liveinpeace/service/ForegroundService.kt b/app/src/main/java/com/maary/liveinpeace/service/ForegroundService.kt
index 8f55f6d..a1eca08 100644
--- a/app/src/main/java/com/maary/liveinpeace/service/ForegroundService.kt
+++ b/app/src/main/java/com/maary/liveinpeace/service/ForegroundService.kt
@@ -22,16 +22,21 @@ import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.graphics.drawable.IconCompat
 import com.maary.liveinpeace.Constants.Companion.ACTION_NAME_SETTINGS
+import com.maary.liveinpeace.Constants.Companion.ACTION_TOGGLE_AUTO_CONNECTION_ADJUSTMENT
 import com.maary.liveinpeace.Constants.Companion.ALERT_TIME
 import com.maary.liveinpeace.Constants.Companion.BROADCAST_ACTION_FOREGROUND
 import com.maary.liveinpeace.Constants.Companion.BROADCAST_ACTION_MUTE
 import com.maary.liveinpeace.Constants.Companion.BROADCAST_FOREGROUND_INTENT_EXTRA
 import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_DEFAULT
+import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_PROTECT
 import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_ALERT
 import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_FOREGROUND
 import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_GROUP_FORE
+import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_GROUP_PROTECT
+import com.maary.liveinpeace.Constants.Companion.ID_NOTIFICATION_PROTECT
 import com.maary.liveinpeace.Constants.Companion.MODE_IMG
 import com.maary.liveinpeace.Constants.Companion.MODE_NUM
+import com.maary.liveinpeace.Constants.Companion.PREF_ENABLE_EAR_PROTECTION
 import com.maary.liveinpeace.Constants.Companion.PREF_ICON
 import com.maary.liveinpeace.Constants.Companion.PREF_NOTIFY_TEXT_SIZE
 import com.maary.liveinpeace.Constants.Companion.PREF_WATCHING_CONNECTING_TIME
@@ -159,6 +164,7 @@ class ForegroundService: Service() {
         override fun onAudioDevicesAdded(addedDevices: Array<out AudioDeviceInfo>?) {
 
             val connectedTime = System.currentTimeMillis()
+            val sharedPreferences = getSharedPreferences(SHARED_PREF, Context.MODE_PRIVATE)
 
             // 在设备连接时记录设备信息和接入时间
             addedDevices?.forEach { deviceInfo ->
@@ -187,10 +193,26 @@ class ForegroundService: Service() {
                     date = LocalDate.now().toString()
                 )
                 notifyDeviceMapChange()
+                if (sharedPreferences.getBoolean(PREF_ENABLE_EAR_PROTECTION, false)){
+                    val audioManager = getSystemService(Context.AUDIO_SERVICE) as AudioManager
+                    var boolProtected = false
+                    while (getVolumePercentage(applicationContext)>25) {
+                        boolProtected = true
+                        audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, 0)
+                    }
+                    while (getVolumePercentage(applicationContext)<10) {
+                        boolProtected = true
+                        audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, 0)
+                    }
+                    if (boolProtected){
+                        with(NotificationManagerCompat.from(applicationContext)){
+                            notify(ID_NOTIFICATION_PROTECT, createProtectionNotification())
+                        }
+                    }
+                }
                 // 执行其他逻辑，比如将设备信息保存到数据库或日志中
             }
 
-            val sharedPreferences = getSharedPreferences(SHARED_PREF, Context.MODE_PRIVATE)
             if (sharedPreferences.getBoolean(PREF_WATCHING_CONNECTING_TIME, false)){
                 for ((productName, _) in deviceMap){
                     if (deviceTimerMap.containsKey(productName)) continue
@@ -341,6 +363,30 @@ class ForegroundService: Service() {
             snoozePendingIntent
         ).build()
 
+        val sharedPreferences = getSharedPreferences(
+            SHARED_PREF,
+            Context.MODE_PRIVATE
+        )
+
+        var protectionActionTitle = R.string.protection
+        if (sharedPreferences != null){
+            if (sharedPreferences.getBoolean(PREF_ENABLE_EAR_PROTECTION, false)){
+                protectionActionTitle = R.string.dont_protect
+            }
+        }
+
+        val protectionIntent = Intent(this, SettingsReceiver::class.java).apply {
+            action = ACTION_TOGGLE_AUTO_CONNECTION_ADJUSTMENT
+        }
+        val protectionPendingIntent: PendingIntent =
+            PendingIntent.getBroadcast(this, 0, protectionIntent, PendingIntent.FLAG_IMMUTABLE)
+
+        val actionProtection : NotificationCompat.Action = NotificationCompat.Action.Builder(
+            R.drawable.ic_headphones_protection,
+            resources.getString(protectionActionTitle),
+            protectionPendingIntent
+        ).build()
+
         val historyIntent = Intent(this, HistoryActivity::class.java)
         historyIntent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
 
@@ -370,11 +416,22 @@ class ForegroundService: Service() {
             .setPriority(NotificationCompat.PRIORITY_LOW)
             .addAction(actionSettings)
             .addAction(actionHistory)
+            .addAction(actionProtection)
             .setGroup(ID_NOTIFICATION_GROUP_FORE)
             .setGroupSummary(false)
             .build()
     }
 
+    fun createProtectionNotification(): Notification {
+        return NotificationCompat.Builder(this, CHANNEL_ID_PROTECT)
+            .setContentTitle(getString(R.string.ears_protected))
+            .setSmallIcon(R.drawable.ic_headphones_protection)
+            .setPriority(NotificationCompat.PRIORITY_LOW)
+            .setGroup(ID_NOTIFICATION_GROUP_PROTECT)
+            .setTimeoutAfter(3000)
+            .build()
+    }
+
     private val textBounds = Rect()
 
     private fun generateNotificationIcon(context: Context, iconMode: Int): IconCompat {
diff --git a/app/src/main/java/com/maary/liveinpeace/service/QSTileService.kt b/app/src/main/java/com/maary/liveinpeace/service/QSTileService.kt
index db3250f..478944c 100644
--- a/app/src/main/java/com/maary/liveinpeace/service/QSTileService.kt
+++ b/app/src/main/java/com/maary/liveinpeace/service/QSTileService.kt
@@ -20,6 +20,7 @@ import com.maary.liveinpeace.Constants.Companion.BROADCAST_ACTION_FOREGROUND
 import com.maary.liveinpeace.Constants.Companion.BROADCAST_FOREGROUND_INTENT_EXTRA
 import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_ALERT
 import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_DEFAULT
+import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_PROTECT
 import com.maary.liveinpeace.Constants.Companion.CHANNEL_ID_SETTINGS
 import com.maary.liveinpeace.Constants.Companion.REQUESTING_WAIT_MILLIS
 import com.maary.liveinpeace.R
@@ -73,6 +74,18 @@ class QSTileService: TileService() {
                     resources.getString(R.string.alert_channel_description)
                 )
             }
+            if (notificationManager.getNotificationChannel(CHANNEL_ID_PROTECT) == null) {
+                val channel = NotificationChannel(
+                    CHANNEL_ID_PROTECT,
+                    resources.getString(R.string.channel_protection),
+                    NotificationManager.IMPORTANCE_LOW).apply {
+                    description = resources.getString(R.string.protection_channel_description)
+                    enableVibration(false)
+                    setSound(null, null)
+                }
+                // Register the channel with the system
+                notificationManager.createNotificationChannel(channel)
+            }
 
             applicationContext.startForegroundService(intent)
             tile.state = Tile.STATE_ACTIVE
diff --git a/app/src/main/res/drawable/ic_headphones_protection.xml b/app/src/main/res/drawable/ic_headphones_protection.xml
new file mode 100644
index 0000000..a3fda25
--- /dev/null
+++ b/app/src/main/res/drawable/ic_headphones_protection.xml
@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M6.2,3.01C4.44,2.89 3,4.42 3,6.19L3,16c0,2.76 2.24,5 5,5h0c2.76,0 5,-2.24 5,-5V8c0,-1.66 1.34,-3 3,-3h0c1.66,0 3,1.34 3,3v7l-0.83,0c-1.61,0 -3.06,1.18 -3.17,2.79c-0.12,1.69 1.16,3.1 2.8,3.21c1.76,0.12 3.2,-1.42 3.2,-3.18L21,8c0,-2.76 -2.24,-5 -5,-5h0c-2.76,0 -5,2.24 -5,5v8c0,1.66 -1.34,3 -3,3l0,0c-1.66,0 -3,-1.34 -3,-3V9l0.83,0C7.44,9 8.89,7.82 9,6.21C9.11,4.53 7.83,3.11 6.2,3.01z"/>
+</vector>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index cc19025..ca862f1 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -38,4 +38,9 @@
     <string name="has_already_connected_for">已连接</string>
     <string name="device_connection_state">设备连接状态指示</string>
     <string name="select_date">选择日期</string>
+    <string name="protection">保护耳朵</string>
+    <string name="dont_protect">不保护耳朵</string>
+    <string name="ears_protected">保护了耳朵</string>
+    <string name="channel_protection">保护耳朵</string>
+    <string name="protection_channel_description">有新设备连接时自动将音量调节至 25 以下</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7d9dd0a..28eedd9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -30,6 +30,11 @@
     <string name="has_already_connected_for">Already connected</string>
     <string name="device_connection_state">Device connection state indicator</string>
     <string name="select_date">Select a Date</string>
+    <string name="protection">Protect My Ears</string>
+    <string name="dont_protect">Stop protecting ears</string>
+    <string name="ears_protected">Ears Protected</string>
+    <string name="channel_protection">Protecting ears</string>
+    <string name="protection_channel_description">Auto adjust volume below 25 when connecting to a new device.</string>
     <string-array name="array_volume_comment">
         <item>Shhhhhhh…</item>
         <item>Perfectly Balanced, As All Things Should Be…</item>