diff --git a/server/imserver/app.cc b/server/imserver/app.cc
index 4152783..2d0e33d 100644
--- a/server/imserver/app.cc
+++ b/server/imserver/app.cc
@@ -28,6 +28,7 @@
 #include "asynctaskmgr.h"
 #include "guildmgr.h"
 #include "metamgr.h"
+#include "chatmgr.h"
 
 #include "MSConnMgr.h"
 #include "IMConnMgr.h"
@@ -112,6 +113,7 @@ bool App::Init(int argc, char* argv[])
     SyncHelper::Instance()->Init();
     AsyncTaskMgr::Instance()->Init();
     GuildMgr::Instance()->Init();
+    ChatMgr::Instance()->Init();
 
     a8::UdpLog::Instance()->Info("friend_imserver starting instance_id:%d pid:%d 13423",
                                  {
@@ -146,6 +148,7 @@ bool App::Init(int argc, char* argv[])
 void App::UnInit()
 {
     a8::XPrintf("friend_imserver terminating instance_id:%d pid:%d\n", {instance_id, getpid()});
+    ChatMgr::Instance()->UnInit();
     GuildMgr::Instance()->UnInit();
     AsyncTaskMgr::Instance()->UnInit();
     SyncHelper::Instance()->UnInit();
diff --git a/server/imserver/chatmgr.cc b/server/imserver/chatmgr.cc
new file mode 100644
index 0000000..c230593
--- /dev/null
+++ b/server/imserver/chatmgr.cc
@@ -0,0 +1,156 @@
+#include "precompile.h"
+
+#include "chatmgr.h"
+#include "player.h"
+#include "playermgr.h"
+#include "guild.h"
+#include "guildmgr.h"
+
+void ChatMgr::Init()
+{
+
+}
+
+void ChatMgr::UnInit()
+{
+
+}
+
+void ChatMgr::FillSMUpdateChatRedPointNotify(Player* hum, cs::SMUpdateChatRedPointNotify& msg)
+{
+    if (world_msgrec_.curr_id > hum->world_channel_last_id) {
+        msg.add_has_unread_msg_channels(kCCWorld);
+    }
+    if (hum->GuildId() != 0) {
+        auto itr = guild_msgrec_.find(hum->GuildId());
+        if (itr != guild_msgrec_.end()) {
+            if (itr->second.curr_id > hum->guild_channel_last_id) {
+                msg.add_has_unread_msg_channels(kCCGuild);
+            }
+        }
+    }
+    ChatedUserRec* chated_user = GetChatedUser(hum->AccountId());
+    if (chated_user && chated_user->has_unread_msg) {
+        msg.add_has_unread_msg_channels(kCCPrivate);
+    }
+}
+
+void ChatMgr::FillSMUpdatePrivateChatRedPointNotify(Player* hum,
+                                                    cs::SMUpdatePrivateChatRedPointNotify& msg)
+{
+    ChatedUserRec* chated_user = GetChatedUser(hum->AccountId());
+    if (chated_user) {
+        for (auto& pair : chated_user->users) {
+            if (pair.second.curr_id < pair.second.last_id) {
+                msg.add_has_unread_msg_accounts(pair.first);
+            }
+        }
+    }
+}
+
+void ChatMgr::ProcWorldChat(Player* hum, const cs::CMSendChatMsg& msg)
+{
+    ++world_msg_id_;
+
+    cs::MFChatMsg* p = new cs::MFChatMsg();
+    p->set_msg_uuid(world_msg_id_);
+
+    world_msgrec_.curr_id = world_msg_id_;
+    world_msgrec_.msg_list.push_back(p);
+    world_msgrec_.PopAndDelete(50);
+    PlayerMgr::Instance()->TraversePlayer
+        ([](Player* hum)
+         {
+             ChatMgr::Instance()->SyncWorldChatMsg(hum);
+         });
+}
+
+void ChatMgr::ProcPrivateChat(Player* hum, const cs::CMSendChatMsg& msg)
+{
+    ++private_msg_id_;
+
+    cs::MFChatMsg* p = new cs::MFChatMsg();
+    p->set_msg_uuid(private_msg_id_);
+
+    ChatMgr::Instance()->SyncPrivateChatMsg(hum);
+    Player* target_hum = PlayerMgr::Instance()->GetPlayerByAccountId(msg.target());
+    if (target_hum) {
+        ChatMgr::Instance()->SyncPrivateChatMsg(target_hum);
+    }
+}
+
+void ChatMgr::ProcGuildChat(Player* hum, const cs::CMSendChatMsg& msg)
+{
+    ++guild_msg_id_;
+
+    cs::MFChatMsg* p = new cs::MFChatMsg();
+    p->set_msg_uuid(guild_msg_id_);
+
+    Guild* guild = GuildMgr::Instance()->GetGuild(hum->GuildId());
+    if (guild) {
+        guild->TraverseMember
+            (
+             [] (GuildMember* member)
+             {
+                 Player* hum = PlayerMgr::Instance()->GetPlayerByAccountId(member->account_id);
+                 if (hum) {
+                     ChatMgr::Instance()->SyncGuildChatMsg(hum);
+                 }
+             }
+             );
+    }
+}
+
+ChatedUserRec* ChatMgr::GetChatedUser(const std::string& account_id)
+{
+    auto itr = private_chated_users_.find(account_id);
+    return itr != private_chated_users_.end() ? &itr->second : nullptr;
+}
+
+void ChatMgr::SyncWorldChatMsg(Player* hum)
+{
+    if (hum->chat_channel == kCCWorld) {
+        cs::SMChatMsgNotify notifymsg;
+        for (cs::MFChatMsg* chat_msg : world_msgrec_.msg_list) {
+            if (chat_msg->msg_uuid() > hum->world_channel_last_id) {
+                *notifymsg.add_msg_list() = *chat_msg;
+                hum->world_channel_last_id = chat_msg->msg_uuid();
+            }
+        }
+        if (!notifymsg.msg_list().size() > 0) {
+            hum->SendMsg(notifymsg);
+        }
+    } else {
+        hum->MarkNewMsg();
+    }
+
+}
+
+void ChatMgr::SyncPrivateChatMsg(Player* hum)
+{
+
+}
+
+void ChatMgr::SyncGuildChatMsg(Player* hum)
+{
+    if (hum->GuildId() == 0) {
+        return;
+    }
+    auto itr = guild_msgrec_.find(hum->GuildId());
+    if (itr != guild_msgrec_.end()) {
+        if (hum->chat_channel == kCCGuild) {
+            cs::SMChatMsgNotify notifymsg;
+            for (cs::MFChatMsg* chat_msg : world_msgrec_.msg_list) {
+                if (chat_msg->msg_uuid() > hum->guild_channel_last_id) {
+                    *notifymsg.add_msg_list() = *chat_msg;
+                    hum->guild_channel_last_id = chat_msg->msg_uuid();
+                }
+            }
+            if (!notifymsg.msg_list().size() > 0) {
+                hum->SendMsg(notifymsg);
+            }
+        } else {
+            hum->MarkNewMsg();
+        }
+    }
+}
diff --git a/server/imserver/chatmgr.h b/server/imserver/chatmgr.h
new file mode 100644
index 0000000..6573a03
--- /dev/null
+++ b/server/imserver/chatmgr.h
@@ -0,0 +1,62 @@
+#pragma once
+
+#include "cs_proto.pb.h"
+
+struct ChatMsgRec
+{
+
+    long long curr_id = 0;
+    long long last_id = 0;
+    std::list<cs::MFChatMsg*> msg_list;
+
+    void Pop(int max_num)
+    {
+
+    }
+
+    void PopAndDelete(int max_num)
+    {
+
+    }
+
+};
+
+struct ChatedUserRec
+{
+    bool has_unread_msg = false;
+    std::map<std::string, ChatMsgRec> users;
+};
+
+class Player;
+class ChatMgr : public a8::Singleton<ChatMgr>
+{
+ private:
+    ChatMgr() {};
+    friend class a8::Singleton<ChatMgr>;
+
+ public:
+    void Init();
+    void UnInit();
+
+    void FillSMUpdateChatRedPointNotify(Player* hum, cs::SMUpdateChatRedPointNotify& msg);
+    void FillSMUpdatePrivateChatRedPointNotify(Player* hum, cs::SMUpdatePrivateChatRedPointNotify& msg);
+
+    void ProcWorldChat(Player* hum, const cs::CMSendChatMsg& msg);
+    void ProcPrivateChat(Player* hum, const cs::CMSendChatMsg& msg);
+    void ProcGuildChat(Player* hum, const cs::CMSendChatMsg& msg);
+
+ private:
+    ChatedUserRec* GetChatedUser(const std::string& account_id);
+    void SyncWorldChatMsg(Player* hum);
+    void SyncPrivateChatMsg(Player* hum);
+    void SyncGuildChatMsg(Player* hum);
+
+ private:
+    long long private_msg_id_ = 1000;
+    long long world_msg_id_ = 1000;
+    long long guild_msg_id_ = 1000;
+    ChatMsgRec world_msgrec_;
+    std::map<long long, ChatMsgRec> guild_msgrec_;
+    std::map<long long, cs::MFChatMsg*> private_msg_hash_;
+    std::map<std::string, ChatedUserRec> private_chated_users_;
+};
diff --git a/server/imserver/constant.h b/server/imserver/constant.h
index 9914565..db79099 100644
--- a/server/imserver/constant.h
+++ b/server/imserver/constant.h
@@ -77,9 +77,9 @@ enum GuildMemberUpdateReason
 
 enum ChatChannel_e
 {
-    kCCWorld = 0,
-    kCCFriend = 1,
-    kCCGuild = 2
+    kCCWorld = 1,
+    kCCPrivate = 2,
+    kCCGuild = 3
 };
 
 const char* const PROJ_NAME_FMT = "friend_imserver";
diff --git a/server/imserver/guild.cc b/server/imserver/guild.cc
index 083eb2e..b6a18d3 100644
--- a/server/imserver/guild.cc
+++ b/server/imserver/guild.cc
@@ -1145,6 +1145,13 @@ void Guild::SyncNewApply()
     }
 }
 
+void Guild::TraverseMember(std::function<void (GuildMember*)> callback)
+{
+    for (auto& pair : member_hash_) {
+        callback(pair.second);
+    }
+}
+
 int Guild::GetJobMemberNum(int job)
 {
     std::set<std::string>* members = GetJobMembers(job);
diff --git a/server/imserver/guild.h b/server/imserver/guild.h
index a110a04..73e66f2 100644
--- a/server/imserver/guild.h
+++ b/server/imserver/guild.h
@@ -48,6 +48,7 @@ public:
     bool CheckRedPoint();
     bool HasApply();
     void SyncNewApply();
+    void TraverseMember(std::function<void (GuildMember*)> callback);
 
 private:
     bool IsFull();
diff --git a/server/imserver/handlermgr.cc b/server/imserver/handlermgr.cc
index c378bea..b718a46 100644
--- a/server/imserver/handlermgr.cc
+++ b/server/imserver/handlermgr.cc
@@ -103,6 +103,7 @@ void HandlerMgr::RegisterNetMsgHandlers()
 
     RegisterNetMsgHandler(&wsmsghandler, &Player::_CMSendChatMsg);
     RegisterNetMsgHandler(&wsmsghandler, &Player::_CMReadMsgAndOpenChatNotify);
+    RegisterNetMsgHandler(&wsmsghandler, &Player::_CMSetCurrPrivateChatTarget);
     RegisterNetMsgHandler(&wsmsghandler, &Player::_CMCloseChatNotify);
     RegisterNetMsgHandler(&wsmsghandler, &Player::_CMSendCustomMsg);
     RegisterNetMsgHandler(&wsmsghandler, &Player::_CMDirtyWordCheck);
diff --git a/server/imserver/player.cc b/server/imserver/player.cc
index bee0d8f..40e3b24 100644
--- a/server/imserver/player.cc
+++ b/server/imserver/player.cc
@@ -26,6 +26,7 @@
 #include "MSConnMgr.h"
 #include "handlermgr.h"
 #include "jsondatamgr.h"
+#include "chatmgr.h"
 
 #include "ss_msgid.pb.h"
 #include "framework/cpp/httpclientpool.h"
@@ -79,6 +80,20 @@ void Player::Init()
          },
          &timer_attacher.timer_list_
          );
+   a8::Timer::Instance()->AddDeadLineTimerAndAttach
+        (
+         1000 * 2 + (rand() % 3000),
+         a8::XParams()
+         .SetSender(this),
+         [] (const a8::XParams& param)
+         {
+             Player* hum = (Player*)param.sender.GetUserData();
+             cs::SMUpdateChatRedPointNotify msg;
+             ChatMgr::Instance()->FillSMUpdateChatRedPointNotify(hum, msg);
+             hum->SendMsg(msg);
+         },
+         &timer_attacher.timer_list_
+         );
 }
 
 void Player::UnInit()
@@ -548,6 +563,22 @@ void Player::_CMFriendIdList(f8::MsgHdr& hdr, const cs::CMFriendIdList& msg)
 
 void Player::_CMSendChatMsg(f8::MsgHdr& hdr, const cs::CMSendChatMsg& msg)
 {
+    if (!IsValidChatChannel(msg.chat_channel())) {
+        return;
+    }
+    switch (msg.chat_channel()) {
+    case kCCWorld:
+        ChatMgr::Instance()->ProcWorldChat(this, msg);
+        break;
+    case kCCPrivate:
+        ChatMgr::Instance()->ProcPrivateChat(this, msg);
+        break;
+    case kCCGuild:
+        ChatMgr::Instance()->ProcGuildChat(this, msg);
+        break;
+    default:
+        return;
+    }
     ss::SS_IM_SendChatMsg ss_msg;
     FillIMMsgConext(ss_msg.mutable_context());
     ss_msg.set_chat_channel(msg.chat_channel());
@@ -563,18 +594,28 @@ void Player::_CMSendChatMsg(f8::MsgHdr& hdr, const cs::CMSendChatMsg& msg)
 void Player::_CMReadMsgAndOpenChatNotify(f8::MsgHdr& hdr, const cs::CMReadMsgAndOpenChatNotify& msg)
 {
     if (IsValidChatChannel(msg.curr_channel())) {
-        chat_channel_ = msg.curr_channel();
-    }
-    for (auto& pair : msg.last_ids()) {
-        if (IsValidChatChannel(pair.key())) {
-            chat_last_ids_hash_[pair.key()] = pair.val();
+        chat_channel = msg.curr_channel();
+        if (chat_channel == kCCPrivate) {
+            SyncPrivateChatRedPoint();
+        }
+
+        for (auto& pair : msg.last_ids()) {
+            if (IsValidChatChannel(pair.key())) {
+                chat_last_ids_hash[pair.key()] = pair.val();
+            }
         }
     }
 }
 
+void Player::_CMSetCurrPrivateChatTarget(f8::MsgHdr& hdr, const cs::CMSetCurrPrivateChatTarget& msg)
+{
+    private_target = msg.private_target();
+}
+
 void Player::_CMCloseChatNotify(f8::MsgHdr& hdr, const cs::CMCloseChatNotify& msg)
 {
-    chat_channel_ = -1;
+    chat_channel = -1;
+    private_target = "";
 }
 
 void Player::_CMSendCustomMsg(f8::MsgHdr& hdr, const cs::CMSendCustomMsg& msg)
@@ -1473,6 +1514,11 @@ void Player::SaveToDB(a8::XParams param, f8::AsyncDBOnOkFunc on_ok, f8::AsyncDBO
     role_data.last_save_time = App::Instance()->nowtime;
 }
 
+void Player::MarkNewMsg()
+{
+
+}
+
 Friend* Player::GetFriendById(const std::string& friend_id)
 {
     auto itr = friend_hash_.find(friend_id);
@@ -2272,9 +2318,15 @@ void Player::SyncGuildNewApply(long long guild_id)
 
 bool Player::IsValidChatChannel(int chat_channel)
 {
-    if (chat_channel >= 0 && chat_channel < 2) {
+    if (chat_channel >= kCCWorld && chat_channel <= kCCGuild) {
         return true;
     } else {
         return false;
     }
 }
+
+void Player::SyncPrivateChatRedPoint()
+{
+    cs::SMUpdatePrivateChatRedPointNotify msg;
+    ChatMgr::Instance()->FillSMUpdatePrivateChatRedPointNotify(this, msg);
+}
diff --git a/server/imserver/player.h b/server/imserver/player.h
index f9909dc..1c3059c 100644
--- a/server/imserver/player.h
+++ b/server/imserver/player.h
@@ -24,6 +24,13 @@ class Player
     long ip_saddr = 0;
     int account_registertime = 0;
 
+    int chat_channel = -1;
+    std::string private_target;
+    std::map<int, long long> chat_last_ids_hash;
+
+    long long world_channel_last_id = 0;
+    long long guild_channel_last_id = 0;
+
  public:
     void Init();
     void UnInit();
@@ -95,6 +102,7 @@ class Player
 
     void _CMSendChatMsg(f8::MsgHdr& hdr, const cs::CMSendChatMsg& msg);
     void _CMReadMsgAndOpenChatNotify(f8::MsgHdr& hdr, const cs::CMReadMsgAndOpenChatNotify& msg);
+    void _CMSetCurrPrivateChatTarget(f8::MsgHdr& hdr, const cs::CMSetCurrPrivateChatTarget& msg);
     void _CMCloseChatNotify(f8::MsgHdr& hdr, const cs::CMCloseChatNotify& msg);
     void _CMSendCustomMsg(f8::MsgHdr& hdr, const cs::CMSendCustomMsg& msg);
     void _CMDirtyWordCheck(f8::MsgHdr& hdr, const cs::CMDirtyWordCheck& msg);
@@ -156,6 +164,7 @@ class Player
     int GetFriendNum();
 
     void SaveToDB(a8::XParams param, f8::AsyncDBOnOkFunc on_ok, f8::AsyncDBOnErrorFunc on_error);
+    void MarkNewMsg();
 
 private:
     void FillFriendList(::google::protobuf::RepeatedPtrField< ::cs::MFUserInfo >* friend_list);
@@ -200,6 +209,7 @@ private:
     void SyncGuildRedPoint();
     void SyncGuildNewApply(long long guild_id);
     bool IsValidChatChannel(int chat_channel);
+    void SyncPrivateChatRedPoint();
 
 private:
     bool dirty_ = false;
@@ -215,8 +225,6 @@ private:
     std::set<std::string> exclude_account_ids_;
     std::string user_sign_;
     int last_create_guild_time_ = 0;
-    int chat_channel_ = -1;
-    std::map<int, long long> chat_last_ids_hash_;
 
     std::map<std::string, Friend*> friend_hash_;
     std::map<std::string, Friend*> black_hash_;
diff --git a/server/imserver/playermgr.cc b/server/imserver/playermgr.cc
index fea4465..aef43a4 100644
--- a/server/imserver/playermgr.cc
+++ b/server/imserver/playermgr.cc
@@ -37,16 +37,16 @@ void PlayerMgr::_SS_MS_PushUserList(f8::MsgHdr& hdr, const ss::SS_MS_PushUserLis
 
 void PlayerMgr::_SS_IM_SendChatMsg(f8::MsgHdr& hdr, const ss::SS_IM_SendChatMsg& msg)
 {
-    #if 0
     Player* hum = GetPlayerByAccountId(msg.target());
     if (hum) {
+        #if 0
         cs::SMChatMsgNotify notifymsg;
         notifymsg.set_sender(msg.context().user_info().base_data().account_id());
         notifymsg.set_chat_channel(msg.chat_channel());
         notifymsg.set_msg(msg.msg());
         hum->SendMsg(notifymsg);
+        #endif
     }
-    #endif
 }
 
 void PlayerMgr::_SS_IM_SendCustomMsg(f8::MsgHdr& hdr, const ss::SS_IM_SendCustomMsg& msg)
@@ -353,6 +353,13 @@ void PlayerMgr::Update(long long tick)
     }
 }
 
+void PlayerMgr::TraversePlayer(std::function<void (Player*)> callback)
+{
+    for (auto& pair : accountid_hash_) {
+        callback(pair.second);
+    }
+}
+
 Player* PlayerMgr::GetPlayerBySocket(int socket)
 {
     auto itr = socket_hash_.find(socket);
diff --git a/server/imserver/playermgr.h b/server/imserver/playermgr.h
index c178390..1f42bcb 100644
--- a/server/imserver/playermgr.h
+++ b/server/imserver/playermgr.h
@@ -81,6 +81,7 @@ class PlayerMgr : public a8::Singleton<PlayerMgr>
     int OnlineNum();
     int WatchPlayerNum();
     void Update(long long tick);
+    void TraversePlayer(std::function<void (Player*)> callback);
 
  private:
     void OnClientDisconnect(a8::XParams& param);