diff --git a/binary/jce/structs.go b/binary/jce/structs.go
index 15d8cda8..acdf0683 100644
--- a/binary/jce/structs.go
+++ b/binary/jce/structs.go
@@ -190,6 +190,18 @@ type (
 		PCClientType        int32        `jceId:"8"`
 	}
 
+	RequestPushNotify struct {
+		Uin          int64  `jceId:"0"`
+		Type         byte   `jceId:"1"`
+		Service      string `jceId:"2"`
+		Cmd          string `jceId:"3"`
+		NotifyCookie []byte `jceId:"4"`
+		MsgType      int32  `jceId:"5"`
+		UserActive   int32  `jceId:"6"`
+		GeneralFlag  int32  `jceId:"7"`
+		BindedUin    int64  `jceId:"8"`
+	}
+
 	OnlineInfo struct {
 		InstanceId   int32  `jceId:"0"`
 		ClientType   int32  `jceId:"1"`
@@ -761,6 +773,18 @@ func (pkt *SvcRespParam) ReadFrom(r *JceReader) {
 	pkt.PCClientType = r.ReadInt32(8)
 }
 
+func (pkt *RequestPushNotify) ReadFrom(r *JceReader) {
+	pkt.Uin = r.ReadInt64(0)
+	pkt.Type = r.ReadByte(1)
+	pkt.Service = r.ReadString(2)
+	pkt.Cmd = r.ReadString(3)
+	pkt.NotifyCookie = r.ReadAny(4).([]byte)
+	pkt.MsgType = r.ReadInt32(5)
+	pkt.UserActive = r.ReadInt32(6)
+	pkt.GeneralFlag = r.ReadInt32(7)
+	pkt.BindedUin = r.ReadInt64(8)
+}
+
 func (pkt *OnlineInfo) ReadFrom(r *JceReader) {
 	pkt.InstanceId = r.ReadInt32(0)
 	pkt.ClientType = r.ReadInt32(1)
diff --git a/client/c2c_processor.go b/client/c2c_processor.go
index e85b375a..4c924860 100644
--- a/client/c2c_processor.go
+++ b/client/c2c_processor.go
@@ -13,22 +13,31 @@ import (
 	"google.golang.org/protobuf/proto"
 )
 
-var c2cDecoders = map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo){
-	33: troopAddMemberBroadcastDecoder,
-	35: troopSystemMessageDecoder, 36: troopSystemMessageDecoder, 37: troopSystemMessageDecoder,
-	45: troopSystemMessageDecoder, 46: troopSystemMessageDecoder, 84: troopSystemMessageDecoder,
-	85: troopSystemMessageDecoder, 86: troopSystemMessageDecoder, 87: troopSystemMessageDecoder,
-	140: tempSessionDecoder, 141: tempSessionDecoder,
+var privateMsgDecoders = map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo){
 	9: privateMessageDecoder, 10: privateMessageDecoder, 31: privateMessageDecoder,
 	79: privateMessageDecoder, 97: privateMessageDecoder, 120: privateMessageDecoder,
 	132: privateMessageDecoder, 133: privateMessageDecoder, 166: privateMessageDecoder,
-	167: privateMessageDecoder,
+	167: privateMessageDecoder, 140: tempSessionDecoder, 141: tempSessionDecoder,
 	208: privatePttDecoder,
+}
+
+var troopSystemMsgDecoders = map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo){
+	35: troopSystemMessageDecoder, 36: troopSystemMessageDecoder, 37: troopSystemMessageDecoder,
+	45: troopSystemMessageDecoder, 46: troopSystemMessageDecoder, 84: troopSystemMessageDecoder,
+	85: troopSystemMessageDecoder, 86: troopSystemMessageDecoder, 87: troopSystemMessageDecoder,
+}
+
+var sysMsgDecoders = map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo){
 	187: systemMessageDecoder, 188: systemMessageDecoder, 189: systemMessageDecoder,
 	190: systemMessageDecoder, 191: systemMessageDecoder,
-	529: msgType0x211Decoder,
 }
 
+var otherDecoders = map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo){
+	33: troopAddMemberBroadcastDecoder, 529: msgType0x211Decoder,
+}
+
+var c2cDecoders = map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo){}
+
 type (
 	TempSessionInfo struct {
 		Source    TempSessionSource
@@ -53,6 +62,18 @@ const (
 	AddressBookSource   TempSessionSource = 9 // 来自通讯录
 )
 
+func init() {
+	merge := func(m map[int32]func(*QQClient, *msg.Message, *incomingPacketInfo)) {
+		for k, v := range m {
+			c2cDecoders[k] = v
+		}
+	}
+	merge(privateMsgDecoders)
+	merge(troopSystemMsgDecoders)
+	merge(sysMsgDecoders)
+	merge(otherDecoders)
+}
+
 func (c *QQClient) c2cMessageSyncProcessor(rsp *msg.GetMessageResponse, info *incomingPacketInfo) {
 	c.syncCookie = rsp.SyncCookie
 	c.pubAccountCookie = rsp.PubAccountCookie
@@ -93,11 +114,11 @@ func (c *QQClient) c2cMessageSyncProcessor(rsp *msg.GetMessageResponse, info *in
 
 func (c *QQClient) commMsgProcessor(pMsg *msg.Message, info *incomingPacketInfo) {
 	strKey := fmt.Sprintf("%d%d%d%d", pMsg.Head.GetFromUin(), pMsg.Head.GetToUin(), pMsg.Head.GetMsgSeq(), pMsg.Head.GetMsgUid())
-	if _, ok := c.msgSvcCache.GetAndUpdate(strKey, time.Hour*5); ok {
+	if _, ok := c.msgSvcCache.GetAndUpdate(strKey, time.Hour); ok {
 		c.Debug("c2c msg %v already exists in cache. skip.", pMsg.Head.GetMsgUid())
 		return
 	}
-	c.msgSvcCache.Add(strKey, "", time.Hour*5)
+	c.msgSvcCache.Add(strKey, "", time.Hour)
 	if info.Params.bool("init") {
 		return
 	}
diff --git a/client/decoders.go b/client/decoders.go
index db2ee516..79493046 100644
--- a/client/decoders.go
+++ b/client/decoders.go
@@ -383,7 +383,25 @@ func decodeMessageSvcPacket(c *QQClient, info *incomingPacketInfo, payload []byt
 }
 
 // MessageSvc.PushNotify
-func decodeSvcNotify(c *QQClient, _ *incomingPacketInfo, _ []byte) (interface{}, error) {
+func decodeSvcNotify(c *QQClient, _ *incomingPacketInfo, payload []byte) (interface{}, error) {
+	request := &jce.RequestPacket{}
+	request.ReadFrom(jce.NewJceReader(payload[15:]))
+	data := &jce.RequestDataVersion2{}
+	data.ReadFrom(jce.NewJceReader(request.SBuffer))
+	if len(data.Map) == 0 {
+		_, err := c.sendAndWait(c.buildGetMessageRequestPacket(msg.SyncFlag_START, time.Now().Unix()))
+		return nil, err
+	}
+	notify := &jce.RequestPushNotify{}
+	notify.ReadFrom(jce.NewJceReader(data.Map["req_PushNotify"]["PushNotifyPack.RequestPushNotify"][1:]))
+	if _, ok := troopSystemMsgDecoders[notify.MsgType]; ok && notify.MsgType != 85 && notify.MsgType != 36 {
+		c.exceptAndDispatchGroupSysMsg()
+		return nil, nil
+	}
+	if _, ok := sysMsgDecoders[notify.MsgType]; ok {
+		_, pkt := c.buildSystemMsgNewFriendPacket()
+		return nil, c.send(pkt)
+	}
 	_, err := c.sendAndWait(c.buildGetMessageRequestPacket(msg.SyncFlag_START, time.Now().Unix()))
 	return nil, err
 }