diff --git a/broker/src/main/java/io/moquette/persistence/DatabaseStore.java b/broker/src/main/java/io/moquette/persistence/DatabaseStore.java
index daff313e..7a7c60e1 100644
--- a/broker/src/main/java/io/moquette/persistence/DatabaseStore.java
+++ b/broker/src/main/java/io/moquette/persistence/DatabaseStore.java
@@ -1051,6 +1051,10 @@ public class DatabaseStore {
 
                 out.add(builder.build());
             }
+            if (out.isEmpty()) {
+                WFCMessage.UserSettingEntry.Builder builder = WFCMessage.UserSettingEntry.newBuilder().setScope(999).setKey("").setValue("").setUpdateDt(0);
+                out.add(builder.build());
+            }
             return out;
         } catch (SQLException e) {
             // TODO Auto-generated catch block
diff --git a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
index dd440088..028d00e8 100755
--- a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
+++ b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
@@ -2743,6 +2743,16 @@ public class MemoryMessagesStore implements IMessagesStore {
         return slient;
     }
 
+    @Override
+    public boolean getSilentWhenPcOnline(String userId) {
+        WFCMessage.UserSettingEntry entry = getUserSetting(userId, UserSettingScope.kUserSettingMuteWhenPCOnline, null);
+        if (entry == null || !entry.getValue().equals("0")) {
+            return false;
+        } else {
+            return true;
+        }
+    }
+
     @Override
     public ErrorCode createChannel(String operator, WFCMessage.ChannelInfo channelInfo) {
         HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
diff --git a/broker/src/main/java/io/moquette/spi/IMessagesStore.java b/broker/src/main/java/io/moquette/spi/IMessagesStore.java
index df7ce139..c3847b3b 100755
--- a/broker/src/main/java/io/moquette/spi/IMessagesStore.java
+++ b/broker/src/main/java/io/moquette/spi/IMessagesStore.java
@@ -188,6 +188,7 @@ public interface IMessagesStore {
     boolean getUserGlobalSlient(String userId);
     boolean getUserPushHiddenDetail(String userId);
     boolean getUserConversationSlient(String userId, WFCMessage.Conversation conversation);
+    boolean getSilentWhenPcOnline(String userId);
 
     ErrorCode createChannel(String operator, WFCMessage.ChannelInfo channelInfo);
     void clearUserChannels(String userId);
diff --git a/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java b/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java
index 715a213b..9c2e978b 100755
--- a/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java
+++ b/broker/src/main/java/io/moquette/spi/impl/MessagesPublisher.java
@@ -25,7 +25,6 @@ import com.hazelcast.core.HazelcastInstance;
 import com.hazelcast.util.StringUtil;
 import cn.wildfirechat.pojos.OutputNotifyChannelSubscribeStatus;
 import cn.wildfirechat.pojos.SendMessageData;
-import com.xiaoleilu.hutool.system.UserInfo;
 import com.xiaoleilu.loServer.model.FriendData;
 import io.moquette.persistence.*;
 import io.moquette.persistence.MemorySessionStore.Session;
@@ -198,6 +197,23 @@ public class MessagesPublisher {
             if (pullType == ProtoConstants.PullType.Pull_ChatRoom) {
                 targetClients = m_messagesStore.getChatroomMemberClient(user);
             }
+            boolean isPcOnline = false;
+
+            if (!user.equals(sender)) {
+                for (Session targetSession : sessions) {
+                    if (targetSession.getPlatform() == ProtoConstants.Platform.Platform_WEB
+                        || targetSession.getPlatform() == ProtoConstants.Platform.Platform_Windows
+                        || targetSession.getPlatform() == ProtoConstants.Platform.Platform_LINUX
+                        || targetSession.getPlatform() == ProtoConstants.Platform.Platform_OSX) {
+                        boolean targetIsActive = this.connectionDescriptors.isConnected(targetSession.getClientSession().clientID);
+                        if (targetIsActive) {
+                            isPcOnline = true;
+                            break;
+                        }
+                    }
+                }
+            }
+
             for (Session targetSession : sessions) {
                 //超过7天不活跃的用户忽略
                 if(System.currentTimeMillis() - targetSession.getLastActiveTime() > 7 * 24 * 60 * 60 * 1000) {
@@ -251,6 +267,11 @@ public class MessagesPublisher {
                             LOG.info("The user {} is global sliented", user);
                             isSlient = true;
                         }
+
+                        if (isPcOnline && m_messagesStore.getSilentWhenPcOnline(user)) {
+                            LOG.info("The user {} pc online and silent when pc online", user);
+                            isSlient = true;
+                        }
                     }
 
                     if (!StringUtil.isNullOrEmpty(pushContent) || messageContentType == 400) {
diff --git a/broker/src/main/java/win/liyufan/im/UserSettingScope.java b/broker/src/main/java/win/liyufan/im/UserSettingScope.java
index ae6a4c8c..96ab013f 100644
--- a/broker/src/main/java/win/liyufan/im/UserSettingScope.java
+++ b/broker/src/main/java/win/liyufan/im/UserSettingScope.java
@@ -12,6 +12,7 @@ public interface UserSettingScope {
     int kUserSettingMyChannels = 8;
     int kUserSettingListenedChannels = 9;
     int kUserSettingPCOnline = 10;
+    int kUserSettingMuteWhenPCOnline = 15;
 
     int kUserSettingCustomBegin = 1000;
 }