diff --git a/broker/migrate/h2/V16__add_friend_blocked.sql b/broker/migrate/h2/V16__add_friend_blocked.sql
new file mode 100755
index 00000000..f352633f
--- /dev/null
+++ b/broker/migrate/h2/V16__add_friend_blocked.sql
@@ -0,0 +1,2 @@
+alter table t_friend add column `_blacked` tinyint DEFAULT 0;
+update t_friend set `_blacked` = 1 where `_state` = 2;
diff --git a/broker/migrate/mysql/V21__add_friend_blocked.sql b/broker/migrate/mysql/V21__add_friend_blocked.sql
new file mode 100755
index 00000000..da5911e4
--- /dev/null
+++ b/broker/migrate/mysql/V21__add_friend_blocked.sql
@@ -0,0 +1,2 @@
+alter table t_friend add column `_blacked` tinyint DEFAULT 0 COMMENT "0, normal; 1, blacked";
+update t_friend set `_blacked` = 1 where `_state` = 2;
diff --git a/broker/src/main/java/com/xiaoleilu/loServer/action/admin/FriendRelationGetAction.java b/broker/src/main/java/com/xiaoleilu/loServer/action/admin/FriendRelationGetAction.java
index c771bb0d..7c240d21 100755
--- a/broker/src/main/java/com/xiaoleilu/loServer/action/admin/FriendRelationGetAction.java
+++ b/broker/src/main/java/com/xiaoleilu/loServer/action/admin/FriendRelationGetAction.java
@@ -36,7 +36,7 @@ public class FriendRelationGetAction extends AdminAction {
     public boolean action(Request request, Response response) {
         if (request.getNettyRequest() instanceof FullHttpRequest) {
             InputGetFriendList inputGetFriendList = getRequestBody(request.getNettyRequest(), InputGetFriendList.class);
-            List<FriendData> dataList = messagesStore.getFriendList(inputGetFriendList.getUserId(), 0);
+            List<FriendData> dataList = messagesStore.getFriendList(inputGetFriendList.getUserId(), null, 0);
             List<String> list = new ArrayList<>();
             for (FriendData data : dataList) {
                 if (data.getState() == inputGetFriendList.getStatus()) {
diff --git a/broker/src/main/java/com/xiaoleilu/loServer/model/FriendData.java b/broker/src/main/java/com/xiaoleilu/loServer/model/FriendData.java
index c684572c..c2b60ee6 100755
--- a/broker/src/main/java/com/xiaoleilu/loServer/model/FriendData.java
+++ b/broker/src/main/java/com/xiaoleilu/loServer/model/FriendData.java
@@ -15,14 +15,16 @@ public class FriendData implements Serializable {
     private String friendUid;
     private String alias;
     private int state;
+    private int blacked;
     private long timestamp;
 
 
-    public FriendData(String userId, String friendUid, String alias, int state, long timestamp) {
+    public FriendData(String userId, String friendUid, String alias, int state, int blacked, long timestamp) {
         this.userId = userId;
         this.friendUid = friendUid;
         this.alias = alias;
         this.state = state;
+        this.blacked = blacked;
         this.timestamp = timestamp;
     }
 
@@ -61,6 +63,14 @@ public class FriendData implements Serializable {
         this.state = state;
     }
 
+    public int getBlacked() {
+        return blacked;
+    }
+
+    public void setBlacked(int blacked) {
+        this.blacked = blacked;
+    }
+
     public long getTimestamp() {
         return timestamp;
     }
diff --git a/broker/src/main/java/io/moquette/imhandler/FriendPullHandler.java b/broker/src/main/java/io/moquette/imhandler/FriendPullHandler.java
index 0927eb00..1a312096 100644
--- a/broker/src/main/java/io/moquette/imhandler/FriendPullHandler.java
+++ b/broker/src/main/java/io/moquette/imhandler/FriendPullHandler.java
@@ -22,7 +22,7 @@ import java.util.List;
 public class FriendPullHandler extends IMHandler<WFCMessage.Version> {
     @Override
     public ErrorCode action(ByteBuf ackPayload, String clientID, String fromUser, boolean isAdmin, WFCMessage.Version request, Qos1PublishHandler.IMCallback callback) {
-        List<FriendData> friendDatas = m_messagesStore.getFriendList(fromUser, request.getVersion());
+        List<FriendData> friendDatas = m_messagesStore.getFriendList(fromUser, clientID, request.getVersion());
         WFCMessage.GetFriendsResult.Builder builder = WFCMessage.GetFriendsResult.newBuilder();
         for (FriendData data : friendDatas
             ) {
diff --git a/broker/src/main/java/io/moquette/persistence/DatabaseStore.java b/broker/src/main/java/io/moquette/persistence/DatabaseStore.java
index 94b2c47a..cf5cb2af 100644
--- a/broker/src/main/java/io/moquette/persistence/DatabaseStore.java
+++ b/broker/src/main/java/io/moquette/persistence/DatabaseStore.java
@@ -350,7 +350,7 @@ public class DatabaseStore {
 
         try {
             connection = DBUtil.getConnection();
-            String sql = "select `_uid`, `_friend_uid`, `_alias`, `_state`, `_dt` from t_friend";
+            String sql = "select `_uid`, `_friend_uid`, `_alias`, `_state`, `_blacked`, `_dt` from t_friend";
             statement = connection.prepareStatement(sql);
 
             int index;
@@ -375,6 +375,9 @@ public class DatabaseStore {
                 int intvalue = rs.getInt(index++);
                 builder.setState(intvalue);
 
+                intvalue = rs.getInt(index++);
+                builder.setBlacked(intvalue);
+
                 long longvalue = rs.getLong(index++);
                 builder.setTimestamp(longvalue);
 
@@ -2139,7 +2142,7 @@ public class DatabaseStore {
         ResultSet rs = null;
         try {
             connection = DBUtil.getConnection();
-            String sql = "select `_friend_uid`, `_alias`, `_state`, `_dt` from t_friend where `_uid` = ?";
+            String sql = "select `_friend_uid`, `_alias`, `_state`, `_blacked`, `_dt` from t_friend where `_uid` = ?";
             statement = connection.prepareStatement(sql);
 
 
@@ -2153,9 +2156,10 @@ public class DatabaseStore {
                 String uid = rs.getString(1);
                 String alias = rs.getString(2);
                 int state = rs.getInt(3);
-                long timestamp = rs.getLong(4);
+                int blacked = rs.getInt(4);
+                long timestamp = rs.getLong(5);
 
-                FriendData data = new FriendData(userId, uid, alias, state, timestamp);
+                FriendData data = new FriendData(userId, uid, alias, state, blacked, timestamp);
                 out.add(data);
             }
             return out;
@@ -2305,10 +2309,11 @@ public class DatabaseStore {
             PreparedStatement statement = null;
             try {
                 connection = DBUtil.getConnection();
-                String sql = "insert into t_friend (`_uid`, `_friend_uid`, `_alias`, `_state`, `_dt`) values(?, ?, ?, ?, ?)" +
+                String sql = "insert into t_friend (`_uid`, `_friend_uid`, `_alias`, `_state`, `_blacked`, `_dt`) values(?, ?, ?, ?, ?, ?)" +
                     " ON DUPLICATE KEY UPDATE " +
                     "`_alias` = ?," +
                     "`_state` = ?," +
+                    "`_blacked` = ?," +
                     "`_dt` = ?";
 
 
@@ -2318,9 +2323,11 @@ public class DatabaseStore {
                 statement.setString(index++, request.getFriendUid());
                 statement.setString(index++, request.getAlias());
                 statement.setInt(index++, request.getState());
+                statement.setInt(index++, request.getBlacked());
                 statement.setLong(index++, request.getTimestamp());
                 statement.setString(index++, request.getAlias());
                 statement.setInt(index++, request.getState());
+                statement.setInt(index++, request.getBlacked());
                 statement.setLong(index++, request.getTimestamp());
                 int count = statement.executeUpdate();
                 LOG.info("Update rows {}", count);
diff --git a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
index 758b92e4..72efe862 100755
--- a/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
+++ b/broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java
@@ -30,6 +30,7 @@ import io.moquette.spi.IMatchingCondition;
 import io.moquette.spi.IMessagesStore;
 import io.moquette.spi.security.Tokenor;
 import io.moquette.spi.impl.subscriptions.Topic;
+import io.netty.handler.codec.mqtt.MqttVersion;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import win.liyufan.im.*;
@@ -1652,7 +1653,7 @@ public class MemoryMessagesStore implements IMessagesStore {
     }
 
     @Override
-    public List<FriendData> getFriendList(String userId, long version) {
+    public List<FriendData> getFriendList(String userId, String clientId, long version) {
         List<FriendData> out = new ArrayList<FriendData>();
 
         HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
@@ -1662,9 +1663,26 @@ public class MemoryMessagesStore implements IMessagesStore {
             friends = loadFriend(friendsMap, userId);
         }
 
+        boolean needFriendMigrate = false;
+
+        if (!StringUtil.isNullOrEmpty(clientId)) {
+            MemorySessionStore.Session session = m_Server.getStore().sessionsStore().getSession(clientId);
+            if(session != null && session.getMqttVersion() != null && session.getMqttVersion().protocolLevel() < MqttVersion.Wildfire_2.protocolLevel()) {
+                needFriendMigrate = true;
+            }
+        }
+
         for (FriendData friend : friends) {
             if (friend.getTimestamp() > version) {
-                out.add(friend);
+                if (needFriendMigrate) {
+                    if (friend.getBlacked() > 0) {
+                        friend.setState(2);
+                    }
+                    out.add(friend);
+                } else {
+                    out.add(friend);
+                }
+
             }
         }
 
@@ -1719,6 +1737,24 @@ public class MemoryMessagesStore implements IMessagesStore {
                 return ErrorCode.ERROR_CODE_FRIEND_ALREADY_REQUEST;
             }
         }
+
+        MultiMap<String, FriendData> friendsMap = hzInstance.getMultiMap(USER_FRIENDS);
+
+        FriendData friendData1 = null;
+        Collection<FriendData> friendDatas = friendsMap.get(userId);
+        if (friendDatas == null || friendDatas.size() == 0) {
+            friendDatas = loadFriend(friendsMap, userId);
+        }
+        for (FriendData fd : friendDatas) {
+            if (fd.getFriendUid().equals(request.getTargetUid())) {
+                friendData1 = fd;
+                break;
+            }
+        }
+        if (friendData1 != null && friendData1.getBlacked() > 0) {
+            return ErrorCode.ERROR_CODE_IN_BLACK_LIST;
+        }
+
         WFCMessage.FriendRequest newRequest = WFCMessage.FriendRequest
             .newBuilder()
             .setFromUid(userId)
@@ -1770,7 +1806,7 @@ public class MemoryMessagesStore implements IMessagesStore {
                 }
             }
             if (friendData1 == null) {
-                friendData1 = new FriendData(userId, request.getTargetUid(), "", request.getStatus(), System.currentTimeMillis());
+                friendData1 = new FriendData(userId, request.getTargetUid(), "", request.getStatus(), 0, System.currentTimeMillis());
             } else {
                 friendData1.setState(request.getStatus());
                 friendData1.setTimestamp(System.currentTimeMillis());
@@ -1792,7 +1828,7 @@ public class MemoryMessagesStore implements IMessagesStore {
                     }
                 }
                 if (friendData2 == null) {
-                    friendData2 = new FriendData(request.getTargetUid(), userId, "", request.getStatus(), friendData1.getTimestamp());
+                    friendData2 = new FriendData(request.getTargetUid(), userId, "", request.getStatus(), 0, friendData1.getTimestamp());
                 } else {
                     friendsMap.remove(request.getTargetUid(), friendData2);
                     friendData2.setState(request.getStatus());
@@ -1833,10 +1869,10 @@ public class MemoryMessagesStore implements IMessagesStore {
                 databaseStore.persistOrUpdateFriendRequest(existRequest);
                 MultiMap<String, FriendData> friendsMap = hzInstance.getMultiMap(USER_FRIENDS);
 
-                FriendData friendData1 = new FriendData(userId, request.getTargetUid(), "", 0, System.currentTimeMillis());
+                FriendData friendData1 = new FriendData(userId, request.getTargetUid(), "", 0, 0, System.currentTimeMillis());
                 databaseStore.persistOrUpdateFriendData(friendData1);
 
-                FriendData friendData2 = new FriendData(request.getTargetUid(), userId, "", 0, friendData1.getTimestamp());
+                FriendData friendData2 = new FriendData(request.getTargetUid(), userId, "", 0, 0, friendData1.getTimestamp());
                 databaseStore.persistOrUpdateFriendData(friendData2);
 
                 requestMap.remove(userId);
@@ -1858,6 +1894,9 @@ public class MemoryMessagesStore implements IMessagesStore {
 
     @Override
     public ErrorCode blackUserRequest(String fromUser, String targetUserId, int state, long[] heads) {
+        if (state == 2) {
+            state = 1;
+        }
         HazelcastInstance hzInstance = m_Server.getHazelcastInstance();
         MultiMap<String, FriendData> friendsMap = hzInstance.getMultiMap(USER_FRIENDS);
 
@@ -1875,9 +1914,9 @@ public class MemoryMessagesStore implements IMessagesStore {
         }
 
         if (friendData == null) {
-            friendData = new FriendData(fromUser, targetUserId, "", state, System.currentTimeMillis());
+            friendData = new FriendData(fromUser, targetUserId, "", 1, state, System.currentTimeMillis());
         }
-        friendData.setState(state);
+        friendData.setBlacked(state);
         friendData.setTimestamp(System.currentTimeMillis());
 
 
diff --git a/broker/src/main/java/io/moquette/spi/IMessagesStore.java b/broker/src/main/java/io/moquette/spi/IMessagesStore.java
index 70cfbd19..12231d0c 100755
--- a/broker/src/main/java/io/moquette/spi/IMessagesStore.java
+++ b/broker/src/main/java/io/moquette/spi/IMessagesStore.java
@@ -153,7 +153,7 @@ public interface IMessagesStore {
     ErrorCode verifyToken(String userId, String token, List<String> serverIPs, List<Integer> ports);
     ErrorCode login(String name, String password, List<String> userIdRet);
 
-    List<FriendData> getFriendList(String userId, long version);
+    List<FriendData> getFriendList(String userId, String clientId, long version);
     List<WFCMessage.FriendRequest> getFriendRequestList(String userId, long version);
 
     ErrorCode saveAddFriendRequest(String userId, WFCMessage.AddFriendRequest request, long[] head);
diff --git a/broker/src/main/java/io/moquette/spi/impl/ProtocolProcessor.java b/broker/src/main/java/io/moquette/spi/impl/ProtocolProcessor.java
index 7340b419..4ed5eea9 100755
--- a/broker/src/main/java/io/moquette/spi/impl/ProtocolProcessor.java
+++ b/broker/src/main/java/io/moquette/spi/impl/ProtocolProcessor.java
@@ -142,9 +142,8 @@ public class ProtocolProcessor {
         String clientId = payload.clientIdentifier();
         LOG.info("Processing CONNECT message. CId={}, username={}", clientId, payload.userName());
 
-        if (msg.variableHeader().version() != MqttVersion.MQTT_3_1.protocolLevel()
-                && msg.variableHeader().version() != MqttVersion.MQTT_3_1_1.protocolLevel()
-                && msg.variableHeader().version() != MqttVersion.Wildfire_1.protocolLevel()) {
+        if (msg.variableHeader().version() <= MqttVersion.MQTT_3_1_1.protocolLevel() ||
+                msg.variableHeader().version() >= MqttVersion.Wildfire_Max.protocolLevel()) {
             MqttConnAckMessage badProto = connAck(CONNECTION_REFUSED_UNACCEPTABLE_PROTOCOL_VERSION);
 
             LOG.error("MQTT protocol version is not valid. CId={}", clientId);
diff --git a/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java b/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java
index a1aea010..19806b42 100755
--- a/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java
+++ b/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java
@@ -178,7 +178,7 @@ public class Qos1PublishHandler extends QosPublishHandler {
                         } else {
                             MemorySessionStore.Session session = m_sessionStore.getSession(clientID);
                             if (session != null && session.getUsername().equals(fromUser)) {
-                                if (data.length > 7*1024 && session.getMqttVersion() == MqttVersion.Wildfire_1) {
+                                if (data.length > 7*1024 && session.getMqttVersion().protocolLevel() >= MqttVersion.Wildfire_1.protocolLevel()) {
                                     ByteArrayOutputStream out = new ByteArrayOutputStream();
                                     GZIPOutputStream gzip;
                                     try {
diff --git a/broker/src/main/java/io/netty/handler/codec/mqtt/MqttCodecUtil.java b/broker/src/main/java/io/netty/handler/codec/mqtt/MqttCodecUtil.java
index 2c31db07..f5093201 100755
--- a/broker/src/main/java/io/netty/handler/codec/mqtt/MqttCodecUtil.java
+++ b/broker/src/main/java/io/netty/handler/codec/mqtt/MqttCodecUtil.java
@@ -43,7 +43,7 @@ final class MqttCodecUtil {
             return clientId != null && clientId.length() >= MIN_CLIENT_ID_LENGTH &&
                 clientId.length() <= MAX_CLIENT_ID_LENGTH;
         }
-        if (mqttVersion == MqttVersion.MQTT_3_1_1 || mqttVersion == MqttVersion.Wildfire_1) {
+        if (mqttVersion.protocolLevel() >= MqttVersion.MQTT_3_1_1.protocolLevel()) {
             // In 3.1.3.1 Client Identifier of MQTT 3.1.1 specification, The Server MAY allow ClientId’s
             // that contain more than 23 encoded bytes. And, The Server MAY allow zero-length ClientId.
             return clientId != null;
diff --git a/broker/src/main/java/io/netty/handler/codec/mqtt/MqttDecoder.java b/broker/src/main/java/io/netty/handler/codec/mqtt/MqttDecoder.java
index ff66cdea..0be6d71a 100755
--- a/broker/src/main/java/io/netty/handler/codec/mqtt/MqttDecoder.java
+++ b/broker/src/main/java/io/netty/handler/codec/mqtt/MqttDecoder.java
@@ -223,7 +223,7 @@ public final class MqttDecoder extends ReplayingDecoder<DecoderState> {
         final int willQos = (b1 & 0x18) >> 3;
         final boolean willFlag = (b1 & 0x04) == 0x04;
         final boolean cleanSession = (b1 & 0x02) == 0x02;
-        if (mqttVersion == MqttVersion.MQTT_3_1_1 || mqttVersion == MqttVersion.Wildfire_1) {
+        if (mqttVersion.protocolLevel() >= MqttVersion.MQTT_3_1_1.protocolLevel()) {
             final boolean zeroReservedFlag = (b1 & 0x01) == 0x0;
             if (!zeroReservedFlag) {
                 // MQTT v3.1.1: The Server MUST validate that the reserved flag in the CONNECT Control Packet is
diff --git a/broker/src/main/java/io/netty/handler/codec/mqtt/MqttVersion.java b/broker/src/main/java/io/netty/handler/codec/mqtt/MqttVersion.java
index cd7f6519..9d5b7ed6 100755
--- a/broker/src/main/java/io/netty/handler/codec/mqtt/MqttVersion.java
+++ b/broker/src/main/java/io/netty/handler/codec/mqtt/MqttVersion.java
@@ -25,7 +25,9 @@ import io.netty.util.internal.ObjectUtil;
 public enum MqttVersion {
     MQTT_3_1("MQIsdp", (byte) 3),
     MQTT_3_1_1("MQTT", (byte) 4),
-    Wildfire_1("MQTT", (byte) 5);
+    Wildfire_1("MQTT", (byte) 5),
+    Wildfire_2("MQTT", (byte) 6),
+    Wildfire_Max("MQTT", (byte) 7);
 
     private final String name;
     private final byte level;