diff --git a/consumer.go b/consumer.go
index 31d7e69..b72ccfc 100644
--- a/consumer.go
+++ b/consumer.go
@@ -21,20 +21,6 @@ type Consumer struct {
 	logger    Logger
 	stopOnce  sync.Once
 	stopFlag  int32
-	metric    Metric
-}
-
-func (s *Consumer) incBusyWorker() {
-	s.metric.IncBusyWorker()
-}
-
-func (s *Consumer) decBusyWorker() {
-	s.metric.DecBusyWorker()
-}
-
-// BusyWorkers returns the numbers of workers has been busy.
-func (s *Consumer) BusyWorkers() uint64 {
-	return s.metric.BusyWorkers()
 }
 
 func (s *Consumer) handle(job Job) error {
@@ -43,10 +29,8 @@ func (s *Consumer) handle(job Job) error {
 	panicChan := make(chan interface{}, 1)
 	startTime := time.Now()
 	ctx, cancel := context.WithTimeout(context.Background(), job.Timeout)
-	s.incBusyWorker()
 	defer func() {
 		cancel()
-		s.decBusyWorker()
 	}()
 
 	// run the job
@@ -157,7 +141,6 @@ func NewConsumer(opts ...Option) *Consumer {
 		stop:      make(chan struct{}),
 		logger:    o.logger,
 		runFunc:   o.fn,
-		metric:    o.metric,
 	}
 
 	return w
diff --git a/consumer_test.go b/consumer_test.go
index fba3a10..6097a97 100644
--- a/consumer_test.go
+++ b/consumer_test.go
@@ -321,30 +321,3 @@ func TestTaskJobComplete(t *testing.T) {
 	}
 	assert.Equal(t, context.DeadlineExceeded, w.handle(job))
 }
-
-func TestBusyWorkerCount(t *testing.T) {
-	job := Job{
-		Timeout: 200 * time.Millisecond,
-		Task: func(ctx context.Context) error {
-			time.Sleep(100 * time.Millisecond)
-			return nil
-		},
-	}
-
-	w := NewConsumer()
-
-	assert.Equal(t, uint64(0), w.BusyWorkers())
-	go func() {
-		assert.NoError(t, w.handle(job))
-	}()
-	go func() {
-		assert.NoError(t, w.handle(job))
-	}()
-
-	time.Sleep(50 * time.Millisecond)
-	assert.Equal(t, uint64(2), w.BusyWorkers())
-	time.Sleep(100 * time.Millisecond)
-	assert.Equal(t, uint64(0), w.BusyWorkers())
-
-	assert.NoError(t, w.Shutdown())
-}