diff --git a/broker/config/wildfirechat.conf b/broker/config/wildfirechat.conf
index 39fc4efa..9efa02e5 100755
--- a/broker/config/wildfirechat.conf
+++ b/broker/config/wildfirechat.conf
@@ -201,10 +201,15 @@ local.media.storage.root media
 # local.media.storage.remote_server_url https://example.com/media
 
 # 是否支持多端登陆，为true时支持任意平台任意多个客户端同时登录；为false时每个平台只支持一个端登录，但不同平台可以同时登录。
+# Android/iOS为移动平台，windows/mac/linux为pc平台，web为web平台，小程序为小程序平台。
 server.multi_endpoint false
 
 # 多平台连接状态通知（仅当multi_endpoint为false时有效），true时移动端可以收到pc或web端登录的通知。
-server.multi_platform_notification false
+server.multi_platform_notification true
+
+# 当pc或者web在线时，手机是否默认静音，默认为false。注意仅影响默认值，用户可以手动切换是否静音。
+# 如果这里改为true，客户端那边需要同步修改pc在线默认通知状态。
+server.mobile_default_silent_when_pc_online false
 
 #*********************************************************************
 # Push server configuration
diff --git a/broker/src/main/java/io/moquette/BrokerConstants.java b/broker/src/main/java/io/moquette/BrokerConstants.java
index 4a762187..dabbc649 100755
--- a/broker/src/main/java/io/moquette/BrokerConstants.java
+++ b/broker/src/main/java/io/moquette/BrokerConstants.java
@@ -132,6 +132,7 @@ public final class BrokerConstants {
 
     public static final String SERVER_MULTI_ENDPOINT = "server.multi_endpoint";
     public static final String SERVER_MULTI_PLATFROM_NOTIFICATION = "server.multi_platform_notification";
+    public static final String SERVER_MOBILE_DEFAULT_SILENT_WHEN_PC_ONLINE = "server.mobile_default_silent_when_pc_online";
 
     public static final String MESSAGE_ROAMING = "message.roaming";
     public static final String MESSAGE_Remote_History_Message = "message.remote_history_message";
diff --git a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
index 776c161e..36f09c87 100755
--- a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
+++ b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
@@ -133,6 +133,7 @@ public class MemoryMessagesStore implements IMessagesStore {
     private boolean mFriendNewWelcomeMessage = true;
 
     private boolean mMultiPlatformNotification = false;
+    private boolean mMobileDefaultSilentWhenPCOnline = false;
     private boolean mDisableStrangerChat = false;
 
     private long mChatroomParticipantIdleTime = 900000;
@@ -183,6 +184,12 @@ public class MemoryMessagesStore implements IMessagesStore {
             printMissConfigLog(SERVER_MULTI_PLATFROM_NOTIFICATION, mMultiPlatformNotification + "");
         }
 
+        try {
+            mMobileDefaultSilentWhenPCOnline = Boolean.parseBoolean(m_Server.getConfig().getProperty(SERVER_MOBILE_DEFAULT_SILENT_WHEN_PC_ONLINE, "false"));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
         try {
             mDisableSearch = Boolean.parseBoolean(m_Server.getConfig().getProperty(BrokerConstants.FRIEND_Disable_Search));
         } catch (Exception e) {
@@ -3400,9 +3407,9 @@ public class MemoryMessagesStore implements IMessagesStore {
     public boolean getSilentWhenPcOnline(String userId) {
         WFCMessage.UserSettingEntry entry = getUserSetting(userId, UserSettingScope.kUserSettingMuteWhenPCOnline, null);
         if (entry != null && "1".equals(entry.getValue())) {
-            return true;
+            return !mMobileDefaultSilentWhenPCOnline;
         } else {
-            return false;
+            return mMobileDefaultSilentWhenPCOnline;
         }
     }
     private Date getTodayDate() {
diff --git a/distribution/src/main/resources/wildfirechat.conf b/distribution/src/main/resources/wildfirechat.conf
index 59831bf5..67a43a5a 100755
--- a/distribution/src/main/resources/wildfirechat.conf
+++ b/distribution/src/main/resources/wildfirechat.conf
@@ -198,10 +198,15 @@ local.media.storage.root ./media
 # local.media.storage.remote_server_url https://example.com/media
 
 # 是否支持多端登陆，为true时支持任意平台任意多个客户端同时登录；为false时每个平台只支持一个端登录，但不同平台可以同时登录。
+# Android/iOS为移动平台，windows/mac/linux为pc平台，web为web平台，小程序为小程序平台。
 server.multi_endpoint false
 
 # 多平台连接状态通知（仅当multi_endpoint为false时有效），true时移动端可以收到pc或web端登录的通知。
-server.multi_platform_notification false
+server.multi_platform_notification true
+
+# 当pc或者web在线时，手机是否默认静音，默认为false。注意仅影响默认值，用户可以手动切换是否静音。
+# 如果这里改为true，客户端那边需要同步修改pc在线默认通知状态。
+server.mobile_default_silent_when_pc_online false
 
 #*********************************************************************
 # Push server configuration