diff --git a/backend/model/node.go b/backend/model/node.go
index 7af93dbe..1a1ebce5 100644
--- a/backend/model/node.go
+++ b/backend/model/node.go
@@ -157,10 +157,12 @@ func GetNodeList(filter interface{}) ([]Node, error) {
 }
 
 func GetNode(id bson.ObjectId) (Node, error) {
+	var node Node
+	if id.Hex() == "" {
+		return node, nil
+	}
 	s, c := database.GetCol("nodes")
 	defer s.Close()
-
-	var node Node
 	if err := c.FindId(id).One(&node); err != nil {
 		if err != mgo.ErrNotFound {
 			log.Errorf(err.Error())
diff --git a/backend/model/schedule.go b/backend/model/schedule.go
index 6415e22b..8ec065fb 100644
--- a/backend/model/schedule.go
+++ b/backend/model/schedule.go
@@ -38,6 +38,12 @@ func (sch *Schedule) Save() error {
 	return nil
 }
 
+func (sch *Schedule) Delete() error {
+	s, c := database.GetCol("schedules")
+	defer s.Close()
+	return c.RemoveId(sch.Id)
+}
+
 func GetScheduleList(filter interface{}) ([]Schedule, error) {
 	s, c := database.GetCol("schedules")
 	defer s.Close()
@@ -47,11 +53,12 @@ func GetScheduleList(filter interface{}) ([]Schedule, error) {
 		return schedules, err
 	}
 
-	for i, schedule := range schedules {
+	var schs []Schedule
+	for _, schedule := range schedules {
 		// 获取节点名称
 		if schedule.NodeId == bson.ObjectIdHex(constants.ObjectIdNull) {
 			// 选择所有节点
-			schedules[i].NodeName = "All Nodes"
+			schedule.NodeName = "All Nodes"
 		} else {
 			// 选择单一节点
 			node, err := GetNode(schedule.NodeId)
@@ -59,7 +66,7 @@ func GetScheduleList(filter interface{}) ([]Schedule, error) {
 				log.Errorf(err.Error())
 				continue
 			}
-			schedules[i].NodeName = node.Name
+			schedule.NodeName = node.Name
 		}
 
 		// 获取爬虫名称
@@ -67,11 +74,13 @@ func GetScheduleList(filter interface{}) ([]Schedule, error) {
 		if err != nil {
 			log.Errorf("get spider by id: %s, error: %s", schedule.SpiderId.Hex(), err.Error())
 			debug.PrintStack()
+			_ = schedule.Delete()
 			continue
 		}
-		schedules[i].SpiderName = spider.Name
+		schedule.SpiderName = spider.Name
+		schs = append(schs, schedule)
 	}
-	return schedules, nil
+	return schs, nil
 }
 
 func GetSchedule(id bson.ObjectId) (Schedule, error) {
diff --git a/backend/model/spider.go b/backend/model/spider.go
index 1f88acff..efd93c3d 100644
--- a/backend/model/spider.go
+++ b/backend/model/spider.go
@@ -98,6 +98,12 @@ func (spider *Spider) GetLastTask() (Task, error) {
 	return tasks[0], nil
 }
 
+func (spider *Spider) Delete() error {
+	s, c := database.GetCol("spiders")
+	defer s.Close()
+	return c.RemoveId(spider.Id)
+}
+
 // 爬虫列表
 func GetSpiderList(filter interface{}, skip int, limit int) ([]Spider, int, error) {
 	s, c := database.GetCol("spiders")
@@ -256,15 +262,14 @@ func GetSpiderTypes() ([]*entity.SpiderType, error) {
 	s, c := database.GetCol("spiders")
 	defer s.Close()
 
-
 	group := bson.M{
 		"$group": bson.M{
-			"_id": "$type",
+			"_id":   "$type",
 			"count": bson.M{"$sum": 1},
 		},
 	}
 	var types []*entity.SpiderType
-	if err := c.Pipe([]bson.M{ group}).All(&types); err != nil {
+	if err := c.Pipe([]bson.M{group}).All(&types); err != nil {
 		log.Errorf("get spider types error: %s", err.Error())
 		debug.PrintStack()
 		return nil, err
diff --git a/backend/model/task.go b/backend/model/task.go
index f568b7fe..df046ecc 100644
--- a/backend/model/task.go
+++ b/backend/model/task.go
@@ -4,7 +4,6 @@ import (
 	"crawlab/constants"
 	"crawlab/database"
 	"github.com/apex/log"
-	"github.com/globalsign/mgo"
 	"github.com/globalsign/mgo/bson"
 	"runtime/debug"
 	"time"
@@ -118,20 +117,16 @@ func GetTaskList(filter interface{}, skip int, limit int, sortKey string) ([]Tas
 	for i, task := range tasks {
 		// 获取爬虫名称
 		spider, err := task.GetSpider()
-		if err == mgo.ErrNotFound {
-			// do nothing
-		} else if err != nil {
-			return tasks, err
+		if spider.Id.Hex() == "" || err != nil {
+			_ = spider.Delete()
 		} else {
 			tasks[i].SpiderName = spider.DisplayName
 		}
 
 		// 获取节点名称
 		node, err := task.GetNode()
-		if err == mgo.ErrNotFound {
-			// do nothing
-		} else if err != nil {
-			return tasks, err
+		if node.Id.Hex() == "" || err != nil {
+			_ = task.Delete()
 		} else {
 			tasks[i].NodeName = node.Name
 		}
diff --git a/backend/routes/node.go b/backend/routes/node.go
index f86c152d..7d030773 100644
--- a/backend/routes/node.go
+++ b/backend/routes/node.go
@@ -15,9 +15,9 @@ func GetNodeList(c *gin.Context) {
 		return
 	}
 
-	for i, node := range nodes {
-		nodes[i].IsMaster = services.IsMasterNode(node.Id.Hex())
-	}
+	//for i, node := range nodes {
+	//	nodes[i].IsMaster = services.IsMasterNode(node.Id.Hex())
+	//}
 
 	c.JSON(http.StatusOK, Response{
 		Status:  "ok",
@@ -109,11 +109,11 @@ func GetSystemInfo(c *gin.Context) {
 	})
 }
 
-func DeleteNode(c *gin.Context)  {
+func DeleteNode(c *gin.Context) {
 	id := c.Param("id")
 	node, err := model.GetNode(bson.ObjectIdHex(id))
 	if err != nil {
-		HandleError(http.StatusInternalServerError, c ,err)
+		HandleError(http.StatusInternalServerError, c, err)
 		return
 	}
 	err = node.Delete()
diff --git a/backend/services/node.go b/backend/services/node.go
index 7fc134c5..144cdbd8 100644
--- a/backend/services/node.go
+++ b/backend/services/node.go
@@ -88,6 +88,8 @@ func UpdateNodeStatus() {
 		handleNodeInfo(key, data)
 	}
 
+	// 重新获取list
+	list, _ = database.RedisClient.HKeys("nodes")
 	// 重置不在redis的key为offline
 	model.ResetNodeStatusToOffline(list)
 }
@@ -225,7 +227,7 @@ func InitNodeService() error {
 	}
 
 	// 首次更新节点数据（注册到Redis）
-	UpdateNodeData()
+	// UpdateNodeData()
 
 	// 获取当前节点
 	node, err := model.GetCurrentNode()