diff --git a/backend/services/node.go b/backend/services/node.go
index edaf9f16..d14ce4ae 100644
--- a/backend/services/node.go
+++ b/backend/services/node.go
@@ -171,7 +171,7 @@ func UpdateNodeData() {
 	//先获取所有Redis的nodekey
 	list, _ := database.RedisClient.HKeys("nodes")
 
-	if i := utils.Contains(list, key); i != -1 {
+	if i := utils.Contains(list, key); i == false {
 		// 构造节点数据
 		data := Data{
 			Key:          key,
diff --git a/backend/utils/helpers.go b/backend/utils/helpers.go
index ce29e4b7..e181c66c 100644
--- a/backend/utils/helpers.go
+++ b/backend/utils/helpers.go
@@ -42,19 +42,19 @@ func Close(c io.Closer) {
 	}
 }
 
-func Contains(array interface{}, val interface{}) (index int) {
-	index = -1
+func Contains(array interface{}, val interface{}) (fla bool) {
+	fla = false
 	switch reflect.TypeOf(array).Kind() {
 	case reflect.Slice:
 		{
 			s := reflect.ValueOf(array)
 			for i := 0; i < s.Len(); i++ {
 				if reflect.DeepEqual(val, s.Index(i).Interface()) {
-					index = i
+					fla = true
 					return
 				}
 			}
 		}
 	}
 	return
-}
\ No newline at end of file
+}