diff --git a/web/utils/crontab.py b/web/utils/crontab.py
index 53ac70b4d..58b5e710c 100644
--- a/web/utils/crontab.py
+++ b/web/utils/crontab.py
@@ -530,12 +530,14 @@ echo "--------------------------------------------------------------------------
             file = '/etc/crontab'
         elif sys_name.startswith("freebsd"):
             file = '/var/cron/tabs/root'
-        elif sys_name.startswith("ubuntu"):
-            file = '/var/spool/cron/root'
+        # elif sys_name.startswith("ubuntu"):
+        #     file = '/var/spool/cron/root'
 
         if not os.path.exists(file):
             mw.writeFile(file, '')
         content = mw.readFile(file)
+        if not content:
+            content == ''
         # if not content:
         #     return mw.returnData(False, '计划任务配置文件不存在?') 
         content += str(bash_script) + "\n"