diff --git a/main.go b/main.go
index f714df7..15bb7ff 100644
--- a/main.go
+++ b/main.go
@@ -317,14 +317,14 @@ func main() {
 	}
 
 	w := simple.NewWorker(int(cfg.Core.QueueNum))
-	q := queue.NewQueue(w)
+	q := queue.NewQueue(w, int(cfg.Core.WorkerNum))
 	q.Start()
 
 	finished := make(chan struct{})
 	ctx := withContextFunc(context.Background(), func() {
 		logx.LogAccess.Info("close the queue system, current queue usage: ", q.Usage())
 		// stop queue system
-		q.Stop()
+		q.Shutdown()
 		// wait job completed
 		q.Wait()
 		close(finished)
diff --git a/queue/queue.go b/queue/queue.go
index d884d2a..0b54a4d 100644
--- a/queue/queue.go
+++ b/queue/queue.go
@@ -10,7 +10,6 @@ type (
 	// A Queue is a message queue.
 	Queue struct {
 		workerCount  int
-		queueCount   int
 		routineGroup *routineGroup
 		quit         chan struct{}
 		worker       Worker
@@ -18,15 +17,18 @@ type (
 )
 
 // NewQueue returns a Queue.
-func NewQueue(w Worker) *Queue {
+func NewQueue(w Worker, workerNum int) *Queue {
 	q := &Queue{
 		workerCount:  runtime.NumCPU(),
-		queueCount:   runtime.NumCPU() << 1,
 		routineGroup: newRoutineGroup(),
 		quit:         make(chan struct{}),
 		worker:       w,
 	}
 
+	if workerNum > 0 {
+		q.workerCount = workerNum
+	}
+
 	return q
 }
 
@@ -45,9 +47,9 @@ func (q *Queue) Start() {
 	q.startWorker()
 }
 
-// Stop stops q.
-func (q *Queue) Stop() {
-	q.worker.Stop()
+// Shutdown stops all queues.
+func (q *Queue) Shutdown() {
+	q.worker.Shutdown()
 	close(q.quit)
 }
 
@@ -56,9 +58,9 @@ func (q *Queue) Wait() {
 	q.routineGroup.Wait()
 }
 
-// Enqueue queue all job
-func (q *Queue) Enqueue(job interface{}) error {
-	return q.worker.Enqueue(job)
+// Queue to queue all job
+func (q *Queue) Queue(job interface{}) error {
+	return q.worker.Queue(job)
 }
 
 func (q *Queue) startWorker() {
diff --git a/queue/simple/simple.go b/queue/simple/simple.go
index fda27ec..c86b370 100644
--- a/queue/simple/simple.go
+++ b/queue/simple/simple.go
@@ -4,23 +4,29 @@ import (
 	"errors"
 
 	"github.com/appleboy/gorush/gorush"
+	"github.com/appleboy/gorush/queue"
 )
 
+var _ queue.Worker = (*Worker)(nil)
+
 // Worker for simple queue using channel
 type Worker struct {
 	queueNotification chan gorush.PushNotification
 }
 
 // Run start the worker
-func (s *Worker) Run(_ chan struct{}) {
+func (s *Worker) Run(_ chan struct{}) error {
 	for notification := range s.queueNotification {
 		gorush.SendNotification(notification)
 	}
+
+	return nil
 }
 
-// Stop worker
-func (s *Worker) Stop() {
+// Shutdown worker
+func (s *Worker) Shutdown() error {
 	close(s.queueNotification)
+	return nil
 }
 
 // Capacity for channel
@@ -33,8 +39,8 @@ func (s *Worker) Usage() int {
 	return len(s.queueNotification)
 }
 
-// Enqueue send notification to queue
-func (s *Worker) Enqueue(job interface{}) error {
+// Queue send notification to queue
+func (s *Worker) Queue(job interface{}) error {
 	select {
 	case s.queueNotification <- job.(gorush.PushNotification):
 		return nil
diff --git a/queue/worker.go b/queue/worker.go
index 5224b6a..e32d3d9 100644
--- a/queue/worker.go
+++ b/queue/worker.go
@@ -2,9 +2,9 @@ package queue
 
 // Worker interface
 type Worker interface {
-	Run(chan struct{})
-	Stop()
-	Enqueue(job interface{}) error
+	Run(chan struct{}) error
+	Shutdown() error
+	Queue(job interface{}) error
 	Capacity() int
 	Usage() int
 }
diff --git a/router/server.go b/router/server.go
index 7f2e21e..c28e804 100644
--- a/router/server.go
+++ b/router/server.go
@@ -278,7 +278,7 @@ func handleNotification(ctx context.Context, cfg config.ConfYaml, req gorush.Req
 			notification.AddWaitCount()
 		}
 
-		if err := q.Enqueue(*notification); err != nil {
+		if err := q.Queue(*notification); err != nil {
 			markFailedNotification(cfg, notification, "max capacity reached")
 		}
 
diff --git a/router/server_test.go b/router/server_test.go
index 64826dc..d4a0e18 100644
--- a/router/server_test.go
+++ b/router/server_test.go
@@ -47,10 +47,10 @@ func TestMain(m *testing.M) {
 	}
 
 	w = simple.NewWorker(int(cfg.Core.QueueNum))
-	q = queue.NewQueue(w)
+	q = queue.NewQueue(w, 4)
 	q.Start()
 	defer func() {
-		q.Stop()
+		q.Shutdown()
 		q.Wait()
 	}()