diff --git a/npubo_test.go b/npubo_test.go
index 84a3b15..1456288 100644
--- a/npubo_test.go
+++ b/npubo_test.go
@@ -12,7 +12,7 @@ var pub *npubo.Publisher = npubo.NewPublisher(500, true)
 
 func TestSub(t *testing.T) {
 
-	sub, _ := pub.Subscribe("sub_one/one", "QwQ", func(sub *npubo.Subscriber, val interface{}) error {
+	sub, _ := pub.Subscribe("sub_one/one", "QwQ", true, func(sub *npubo.Subscriber, val interface{}) error {
 		fmt.Println("sub", sub, " message", val)
 		return nil
 	})
@@ -25,12 +25,12 @@ func TestSub(t *testing.T) {
 
 	//sub.Evict()
 
-	pub.Subscribe("sub_one/timeout", "QwQ", func(sub *npubo.Subscriber, val interface{}) error {
+	pub.Subscribe("sub_one/timeout", "QwQ", false, func(sub *npubo.Subscriber, val interface{}) error {
 		time.Sleep(time.Second)
 		return nil
 	})
 
-	pub.Subscribe("sub_one/error", "QwQ", func(sub *npubo.Subscriber, val interface{}) error {
+	pub.Subscribe("sub_one/error", "QwQ", false, func(sub *npubo.Subscriber, val interface{}) error {
 		return errors.New("a error")
 	})
 	//pub.Close()
@@ -56,7 +56,7 @@ func TestPub(t *testing.T) {
 
 func BenchmarkSub(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		pub.Subscribe(fmt.Sprintf("sub_more/%v", i), "QwQ", func(sub *npubo.Subscriber, val interface{}) error {
+		pub.Subscribe(fmt.Sprintf("sub_more/%v", i), "QwQ", false, func(sub *npubo.Subscriber, val interface{}) error {
 			return nil
 		})
 	}
diff --git a/sub.go b/sub.go
index 7660c49..c3703b4 100644
--- a/sub.go
+++ b/sub.go
@@ -3,7 +3,7 @@ package npubo
 import "strings"
 
 // 订阅
-func (that *Publisher) Subscribe(topic string, c_id string, call Call) (*Subscriber, error) {
+func (that *Publisher) Subscribe(topic string, c_id string, openChan bool, call Call) (*Subscriber, error) {
 	that.rwLock.Lock()
 	defer that.rwLock.Unlock()
 
@@ -28,7 +28,7 @@ func (that *Publisher) Subscribe(topic string, c_id string, call Call) (*Subscri
 		if i == len(cals)-1 {
 			nowNode[v].Calls[c_id] = &call
 
-			if that.openChan {
+			if that.openChan && openChan {
 				chanCallBack := func(subData *Subscriber, val interface{}) error {
 					sub.C <- ChanCall{
 						Subscriber: subData,