diff --git a/link.go b/link.go
index c2cecef..9a4b7ef 100644
--- a/link.go
+++ b/link.go
@@ -39,7 +39,6 @@ func NewRecordQueryLink(resultTimeout time.Duration) *recordQueryLink {
 		pendingResult: make(map[string]recordQueryResult),
 		pendingResp:   make(map[string]recordQueryResp),
 	}
-	go c.cleanTimeout()
 	return c
 }
 
@@ -50,22 +49,18 @@ func recordQueryKey(deviceId, channelId string, sn int) string {
 
 // 定期清理过期的查询结果和请求
 func (c *recordQueryLink) cleanTimeout() {
-	tick := time.NewTicker(time.Millisecond * 100)
-	for {
-		<-tick.C
-		for k, s := range c.pendingResp {
-			if time.Since(s.startTime) > s.timeout {
-				if r, ok := c.pendingResult[k]; ok {
-					c.notify(k, r)
-				} else {
-					c.notify(k, recordQueryResult{err: fmt.Errorf("query time out")})
-				}
+	for k, s := range c.pendingResp {
+		if time.Since(s.startTime) > s.timeout {
+			if r, ok := c.pendingResult[k]; ok {
+				c.notify(k, r)
+			} else {
+				c.notify(k, recordQueryResult{err: fmt.Errorf("query time out")})
 			}
 		}
-		for k, r := range c.pendingResult {
-			if time.Since(r.time) > c.timeout {
-				delete(c.pendingResult, k)
-			}
+	}
+	for k, r := range c.pendingResult {
+		if time.Since(r.time) > c.timeout {
+			delete(c.pendingResult, k)
 		}
 	}
 }
diff --git a/server.go b/server.go
index 62655f8..0d40b37 100755
--- a/server.go
+++ b/server.go
@@ -142,12 +142,7 @@ func (c *GB28181Config) startServer() {
 	} else {
 		c.udpPorts.Init(c.MediaPortMin, c.MediaPortMax)
 	}
-
-	if c.Username != "" || c.Password != "" {
-		go c.removeBanDevice()
-	}
-
-	go c.statusCheckJob()
+	go c.startJob()
 }
 
 // func queryCatalog(config *transaction.Config) {
@@ -165,45 +160,58 @@ func (c *GB28181Config) startServer() {
 // 	}
 // }
 
-func (c *GB28181Config) removeBanDevice() {
-	t := time.NewTicker(c.RemoveBanInterval)
-	for range t.C {
-		DeviceRegisterCount.Range(func(key, value interface{}) bool {
-			if value.(int) > MaxRegisterCount {
-				DeviceRegisterCount.Delete(key)
+// 定时任务
+func (c *GB28181Config) startJob() {
+	statusTick := time.NewTicker(c.HeartbeatInterval / 2)
+	banTick := time.NewTicker(c.RemoveBanInterval)
+	linkTick := time.NewTicker(time.Millisecond * 100)
+	GB28181Plugin.Debug("start job")
+	for {
+		select {
+		case <-banTick.C:
+			if c.Username != "" || c.Password != "" {
+				c.removeBanDevice()
 			}
-			return true
-		})
+		case <-statusTick.C:
+			c.statusCheck()
+		case <-linkTick.C:
+			RecordQueryLink.cleanTimeout()
+		}
 	}
 }
 
-// statusCheckJob
+func (c *GB28181Config) removeBanDevice() {
+	DeviceRegisterCount.Range(func(key, value interface{}) bool {
+		if value.(int) > MaxRegisterCount {
+			DeviceRegisterCount.Delete(key)
+		}
+		return true
+	})
+}
+
+// statusCheck
 // -  当设备超过 3 倍心跳时间未发送过心跳（通过 UpdateTime 判断）, 视为离线
 // - 	当设备超过注册有效期内为发送过消息，则从设备列表中删除
 // UpdateTime 在设备发送心跳之外的消息也会被更新，相对于 LastKeepaliveAt 更能体现出设备最会一次活跃的时间
-func (c *GB28181Config) statusCheckJob() {
-	GB28181Plugin.Info("Device status check job started")
-	t := time.NewTicker(c.HeartbeatInterval / 2)
-	for range t.C {
-		Devices.Range(func(key, value any) bool {
-			d := value.(*Device)
-			if time.Since(d.UpdateTime) > c.RegisterValidity {
-				Devices.Delete(key)
-				GB28181Plugin.Info("Device register timeout",
-					zap.String("id", d.ID),
-					zap.Time("registerTime", d.RegisterTime),
-					zap.Time("updateTime", d.UpdateTime),
-				)
-			} else if time.Since(d.UpdateTime) > c.HeartbeatInterval*3 {
-				d.Status = DeviceOfflineStatus
-				d.channelMap.Range(func(key, value any) bool {
-					ch := value.(*Channel)
-					ch.Status = ChannelOffStatus
-					return true
-				})
-				GB28181Plugin.Info("Device offline", zap.String("id", d.ID), zap.Time("updateTime", d.UpdateTime))
-			}
-			return true
-		})
-	}
+func (c *GB28181Config) statusCheck() {
+	Devices.Range(func(key, value any) bool {
+		d := value.(*Device)
+		if time.Since(d.UpdateTime) > c.RegisterValidity {
+			Devices.Delete(key)
+			GB28181Plugin.Info("Device register timeout",
+				zap.String("id", d.ID),
+				zap.Time("registerTime", d.RegisterTime),
+				zap.Time("updateTime", d.UpdateTime),
+			)
+		} else if time.Since(d.UpdateTime) > c.HeartbeatInterval*3 {
+			d.Status = DeviceOfflineStatus
+			d.channelMap.Range(func(key, value any) bool {
+				ch := value.(*Channel)
+				ch.Status = ChannelOffStatus
+				return true
+			})
+			GB28181Plugin.Info("Device offline", zap.String("id", d.ID), zap.Time("updateTime", d.UpdateTime))
+		}
+		return true
+	})
 }