diff --git a/pkg/discoveryregistry/zookeeper/discover.go b/pkg/discoveryregistry/zookeeper/discover.go
index b56999911..f83331943 100644
--- a/pkg/discoveryregistry/zookeeper/discover.go
+++ b/pkg/discoveryregistry/zookeeper/discover.go
@@ -40,7 +40,17 @@ func (s *ZkClient) watch() {
 		event := <-s.eventChan
 		switch event.Type {
 		case zk.EventSession:
-			s.logger.Printf("zk session event: %+v", event)
+			if event.State == zk.StateHasSession && s.isRegistered {
+				s.logger.Printf("zk session event stateHasSession: %+v, client prepare to create new temp node", event)
+				node, err := s.CreateTempNode(s.rpcRegisterName, s.rpcRegisterAddr)
+				if err != nil {
+					s.logger.Printf("zk session event stateHasSession: %+v, create temp node error: %v", event, err)
+				} else {
+					s.node = node
+				}
+			} else {
+				s.logger.Printf("zk session event: %+v", event)
+			}
 		case zk.EventNodeChildrenChanged:
 			s.logger.Printf("zk event: %s", event.Path)
 			l := strings.Split(event.Path, "/")
diff --git a/pkg/discoveryregistry/zookeeper/register.go b/pkg/discoveryregistry/zookeeper/register.go
index fec72538d..8fc5fa34e 100644
--- a/pkg/discoveryregistry/zookeeper/register.go
+++ b/pkg/discoveryregistry/zookeeper/register.go
@@ -30,6 +30,14 @@ func (s *ZkClient) CreateRpcRootNodes(serviceNames []string) error {
 	return nil
 }
 
+func (s *ZkClient) CreateTempNode(rpcRegisterName, addr string) (node string, err error) {
+	return s.conn.CreateProtectedEphemeralSequential(
+		s.getPath(rpcRegisterName)+"/"+addr+"_",
+		[]byte(addr),
+		zk.WorldACL(zk.PermAll),
+	)
+}
+
 func (s *ZkClient) Register(rpcRegisterName, host string, port int, opts ...grpc.DialOption) error {
 	if err := s.ensureName(rpcRegisterName); err != nil {
 		return err
@@ -39,15 +47,14 @@ func (s *ZkClient) Register(rpcRegisterName, host string, port int, opts ...grpc
 	if err != nil {
 		return err
 	}
-	node, err := s.conn.CreateProtectedEphemeralSequential(
-		s.getPath(rpcRegisterName)+"/"+addr+"_",
-		[]byte(addr),
-		zk.WorldACL(zk.PermAll),
-	)
+	node, err := s.CreateTempNode(rpcRegisterName, addr)
 	if err != nil {
 		return err
 	}
+	s.rpcRegisterName = rpcRegisterName
+	s.rpcRegisterAddr = addr
 	s.node = node
+	s.isRegistered = true
 	return nil
 }
 
@@ -60,6 +67,9 @@ func (s *ZkClient) UnRegister() error {
 	}
 	time.Sleep(time.Second)
 	s.node = ""
+	s.rpcRegisterName = ""
+	s.rpcRegisterAddr = ""
+	s.isRegistered = false
 	s.localConns = make(map[string][]grpc.ClientConnInterface)
 	s.resolvers = make(map[string]*Resolver)
 	return nil
diff --git a/pkg/discoveryregistry/zookeeper/resolver.go b/pkg/discoveryregistry/zookeeper/resolver.go
index e395a8f34..7e9c8c125 100644
--- a/pkg/discoveryregistry/zookeeper/resolver.go
+++ b/pkg/discoveryregistry/zookeeper/resolver.go
@@ -73,7 +73,11 @@ func (s *ZkClient) Build(
 	opts resolver.BuildOptions,
 ) (resolver.Resolver, error) {
 	s.logger.Printf("build resolver: %+v, cc: %+v", target, cc.UpdateState)
-	// log.ZDebug(context.Background(), "build resolver start", "target", target, "cc", cc.UpdateState)
+	serviceName := strings.TrimLeft(target.URL.Path, "/")
+	if oldResolver, ok := s.resolvers[serviceName]; ok {
+		s.logger.Printf("rpc resolver exist: %+v, cc: %+v, key: %s", target, cc.UpdateState, serviceName)
+		return oldResolver, nil
+	}
 	r := &Resolver{}
 	r.target = target
 	r.cc = cc
@@ -81,11 +85,8 @@ func (s *ZkClient) Build(
 	r.ResolveNowZK(resolver.ResolveNowOptions{})
 	s.lock.Lock()
 	defer s.lock.Unlock()
-	serviceName := strings.TrimLeft(target.URL.Path, "/")
 	s.resolvers[serviceName] = r
 	s.logger.Printf("build resolver finished: %+v, cc: %+v, key: %s", target, cc.UpdateState, serviceName)
-	// log.ZDebug(context.Background(), "build resolver finished", "target", target, "cc", cc.UpdateState,
-	// "serviceName", serviceName)
 	return r, nil
 }
 
diff --git a/pkg/discoveryregistry/zookeeper/zk.go b/pkg/discoveryregistry/zookeeper/zk.go
index a3b02b12e..cc333c4b6 100644
--- a/pkg/discoveryregistry/zookeeper/zk.go
+++ b/pkg/discoveryregistry/zookeeper/zk.go
@@ -40,7 +40,10 @@ type ZkClient struct {
 	userName  string
 	password  string
 
-	scheme string
+	rpcRegisterName string
+	rpcRegisterAddr string
+	isRegistered    bool
+	scheme          string
 
 	timeout   int
 	conn      *zk.Conn
@@ -136,6 +139,7 @@ func NewClient(zkServers []string, zkRoot string, options ...ZkOption) (*ZkClien
 	resolver.Register(client)
 	go client.refresh()
 	go client.watch()
+	time.Sleep(time.Millisecond * 50)
 	return client, nil
 }
 
diff --git a/pkg/proto/friend/friend.go b/pkg/proto/friend/friend.go
index f2ad6a7a4..197fc753c 100644
--- a/pkg/proto/friend/friend.go
+++ b/pkg/proto/friend/friend.go
@@ -152,9 +152,6 @@ func (x *SetFriendRemarkReq) Check() error {
 	if x.FriendUserID == "" {
 		return errs.ErrArgs.Wrap("fromUserID is empty")
 	}
-	if x.Remark == "" {
-		return errs.ErrArgs.Wrap("remark is empty")
-	}
 	return nil
 }