diff --git a/packaging/cfg/taos.cfg b/packaging/cfg/taos.cfg
index ccce496d2dc0767ed65b54415d6c9b096a839875..4aefc2f44930513c670719c5cad0da0cd0a643e5 100644
--- a/packaging/cfg/taos.cfg
+++ b/packaging/cfg/taos.cfg
@@ -159,10 +159,10 @@
 # stop writing logs when the disk size of the log folder is less than this value
 # minimalLogDirGB       0.1
 
-# stop writing temporary files when the disk size of the log folder is less than this value
+# stop writing temporary files when the disk size of the tmp folder is less than this value
 # minimalTmpDirGB       0.1
 
-# stop writing data when the disk size of the log folder is less than this value
+# if disk free space is less than this value, taosd service exit directly within startup process
 # minimalDataDirGB      0.1
 
 # One mnode is equal to the number of vnode consumed