diff --git a/main.go b/main.go
index a2114e3..0254540 100644
--- a/main.go
+++ b/main.go
@@ -224,21 +224,30 @@ func ReadConfigToSetSystem() {
 				cron_infos = append(cron_infos, logClean)
 			}
 		}
-		if proto.Config.SERVER_USER_TYPE == "slave" && proto.Config.USER_SYNC_TIME > 0 {
-			var is_exist bool
-			for _, v := range cron_infos {
-				if v.Type == 2 {
-					is_exist = true
-					break
+
+		var is_exist bool
+		user_sync_id := -1
+		for i, v := range cron_infos {
+			if v.Type == 2 {
+				is_exist = true
+				if proto.Config.USER_SYNC_TIME != v.Every {
+					v.Every = proto.Config.USER_SYNC_TIME
+					v.Curr = proto.Config.USER_SYNC_TIME
 				}
+				user_sync_id = i
+				break
 			}
-			if !is_exist {
+		}
+		if proto.Config.SERVER_USER_TYPE == "slave" {
+			if proto.Config.USER_SYNC_TIME > 0 && !is_exist {
 				var userSync proto.CronInfo
 				userSync.Type = 2
 				userSync.Info = "user"
 				userSync.Curr = proto.Config.USER_SYNC_TIME
 				userSync.Every = proto.Config.USER_SYNC_TIME
 				cron_infos = append(cron_infos, userSync)
+			} else if user_sync_id != -1 {
+				cron_infos = append(cron_infos[:user_sync_id], cron_infos[user_sync_id+1:]...) //删除
 			}
 		}