diff --git a/cluster.go b/cluster.go
index 9fe2b5e..c46f67b 100644
--- a/cluster.go
+++ b/cluster.go
@@ -82,7 +82,6 @@ func (c *cluster) AddTimer(ctx context.Context, uniqueKey string, spaceTime time
 		return errors.New("添加失败")
 	}
 	defer lock.Unlock()
-	lock.Refresh()
 
 	nowTime := time.Now()
 
@@ -135,9 +134,6 @@ func (c *cluster) getNextTime() {
 	}
 	defer lock.Unlock()
 
-	// 更新锁
-	lock.Refresh()
-
 	// 计算下一次时间
 
 	// 读取执行的缓存
@@ -254,6 +250,7 @@ func doTask(ctx context.Context, red *redis.Client, taskId string) {
 
 	val, ok := clusterWorkerList.Load(taskId)
 	if !ok {
+		fmt.Println("doTask timer:任务不存在")
 		return
 	}
 	t := val.(timerStr)
@@ -266,7 +263,6 @@ func doTask(ctx context.Context, red *redis.Client, taskId string) {
 		return
 	}
 	defer lock.Unlock()
-	lock.Refresh()
 
 	ctx = context.WithValue(ctx, extendParamKey, t.Extend)
 
diff --git a/lockx/lockx.go b/lockx/lockx.go
index 21c7e12..ffe612e 100644
--- a/lockx/lockx.go
+++ b/lockx/lockx.go
@@ -13,14 +13,17 @@ import (
 type globalLock struct {
 	redis     *redis.Client
 	ctx       context.Context
+	cancel    context.CancelFunc
 	uniqueKey string
 	value     string
 }
 
 func NewGlobalLock(ctx context.Context, red *redis.Client, uniqueKey string) *globalLock {
+	ctx, cancel := context.WithTimeout(ctx, time.Second*30)
 	return &globalLock{
 		redis:     red,
 		ctx:       ctx,
+		cancel:    cancel,
 		uniqueKey: uniqueKey,
 		value:     fmt.Sprintf("%d", time.Now().UnixNano()),
 	}
@@ -43,7 +46,11 @@ func (g *globalLock) Lock() bool {
 		_ = err
 		log.Println("globalLock Lock", resp, err, g.uniqueKey, g.value)
 	}
-	return resp == "OK"
+	if resp == "OK" {
+		g.refresh()
+		return true
+	}
+	return false
 }
 
 // 尝试获取锁
@@ -74,21 +81,22 @@ func (g *globalLock) Unlock() bool {
 	if resp != "OK" {
 		log.Println("globalLock Unlock", resp, err, g.uniqueKey, g.value)
 	}
-	return resp == "OK"
+	if resp == "OK" {
+		g.cancel()
+		return true
+	}
+	return false
 }
 
 // 刷新锁
-func (g *globalLock) Refresh() {
+func (g *globalLock) refresh() {
 	go func() {
-		ctx, cancel := context.WithTimeout(g.ctx, time.Second*30)
-		defer cancel()
-
 		t := time.NewTicker(time.Second)
 		for {
 			select {
 			case <-t.C:
-				g.refresh()
-			case <-ctx.Done():
+				g.refreshExec()
+			case <-g.ctx.Done():
 				t.Stop()
 				return
 			}
@@ -96,7 +104,7 @@ func (g *globalLock) Refresh() {
 	}()
 }
 
-func (g *globalLock) refresh() bool {
+func (g *globalLock) refreshExec() bool {
 	script := `
 	local token = redis.call('get',KEYS[1])
 	if token == ARGV[1]
diff --git a/lockx/lockx_test.go b/lockx/lockx_test.go
index 25d1606..9b36e9b 100644
--- a/lockx/lockx_test.go
+++ b/lockx/lockx_test.go
@@ -46,7 +46,6 @@ func TestLockx(t *testing.T) {
 		fmt.Println("lock error")
 	}
 	defer lock.Unlock()
-	lock.Refresh()
 
 	fmt.Println("ssss")