diff --git a/components/lock/zookeeper/zookeeper_lock.go b/components/lock/zookeeper/zookeeper_lock.go
index 9ea2229611..18c060f0fc 100644
--- a/components/lock/zookeeper/zookeeper_lock.go
+++ b/components/lock/zookeeper/zookeeper_lock.go
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+
 package zookeeper
 
 import (
@@ -24,7 +25,15 @@ import (
 	"mosn.io/layotto/components/pkg/utils"
 )
 
-// Zookeeper lock store
+var closeConn = func(conn utils.ZKConnection, expireInSecond int32) {
+	//can also
+	//time.Sleep(time.Second * time.Duration(expireInSecond))
+	<-time.After(time.Second * time.Duration(expireInSecond))
+	// make sure close connecion
+	conn.Close()
+}
+
+// ZookeeperLock lock store
 type ZookeeperLock struct {
 	//trylock reestablish connection  every time
 	factory utils.ConnectionFactory
@@ -34,7 +43,7 @@ type ZookeeperLock struct {
 	logger     log.ErrorLogger
 }
 
-// Create ZookeeperLock
+//NewZookeeperLock Create ZookeeperLock
 func NewZookeeperLock(logger log.ErrorLogger) *ZookeeperLock {
 	lock := &ZookeeperLock{
 		logger: logger,
@@ -67,7 +76,7 @@ func (p *ZookeeperLock) Features() []lock.Feature {
 	return nil
 }
 
-// Node tries to acquire a zookeeper lock
+//TryLock Node tries to acquire a zookeeper lock
 func (p *ZookeeperLock) TryLock(req *lock.TryLockRequest) (*lock.TryLockResponse, error) {
 
 	conn, err := p.factory.NewConnection(time.Duration(req.Expire)*time.Second, p.metadata)
@@ -92,12 +101,7 @@ func (p *ZookeeperLock) TryLock(req *lock.TryLockRequest) (*lock.TryLockResponse
 
 	//2.2 create node success, asyn  to make sure zkclient alive for need time
 	util.GoWithRecover(func() {
-		//can also
-		//time.Sleep(time.Second * time.Duration(req.Expire))
-		timeAfterTrigger := time.After(time.Second * time.Duration(req.Expire))
-		<-timeAfterTrigger
-		// make sure close connecion
-		conn.Close()
+		closeConn(conn, req.Expire)
 	}, nil)
 
 	return &lock.TryLockResponse{
@@ -106,7 +110,7 @@ func (p *ZookeeperLock) TryLock(req *lock.TryLockRequest) (*lock.TryLockResponse
 
 }
 
-// Node tries to release a zookeeper lock
+//Unlock Node tries to release a zookeeper lock
 func (p *ZookeeperLock) Unlock(req *lock.UnlockRequest) (*lock.UnlockResponse, error) {
 
 	conn := p.unlockConn
diff --git a/components/lock/zookeeper/zookeeper_lock_test.go b/components/lock/zookeeper/zookeeper_lock_test.go
index 4246110f03..7ccfc4b2d0 100644
--- a/components/lock/zookeeper/zookeeper_lock_test.go
+++ b/components/lock/zookeeper/zookeeper_lock_test.go
@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+
 package zookeeper
 
 import (
@@ -18,6 +19,8 @@ import (
 	"testing"
 	"time"
 
+	"mosn.io/layotto/components/pkg/utils"
+
 	"github.com/go-zookeeper/zk"
 	"github.com/golang/mock/gomock"
 	"github.com/stretchr/testify/assert"
@@ -36,8 +39,11 @@ var cfg = lock.Metadata{
 	Properties: make(map[string]string),
 }
 
-func TestMain(m *testing.M) {
+var mockCloseConn = func(conn utils.ZKConnection, expireInSecond int32) {
+}
 
+func TestMain(m *testing.M) {
+	closeConn = mockCloseConn
 	cfg.Properties["zookeeperHosts"] = "127.0.0.1;127.0.0.1"
 	cfg.Properties["zookeeperPassword"] = ""
 	os.Exit(m.Run())
@@ -77,7 +83,6 @@ func TestZookeeperLock_ALock_AUnlock(t *testing.T) {
 	})
 	assert.NoError(t, err)
 	assert.Equal(t, unlock.Status, lock.SUCCESS)
-
 }
 
 // A lock ,B unlock
@@ -112,7 +117,6 @@ func TestZookeeperLock_ALock_BUnlock(t *testing.T) {
 	})
 	assert.NoError(t, err)
 	assert.Equal(t, unlock.Status, lock.LOCK_BELONG_TO_OTHERS)
-
 }
 
 // A lock , B lock ,A unlock ,B lock,B unlock