diff --git a/docs-2.0/3.ngql-guide/9.space-statements/5.drop-space.md b/docs-2.0/3.ngql-guide/9.space-statements/5.drop-space.md
index faa33b8728f..0c5553ca97a 100644
--- a/docs-2.0/3.ngql-guide/9.space-statements/5.drop-space.md
+++ b/docs-2.0/3.ngql-guide/9.space-statements/5.drop-space.md
@@ -4,7 +4,7 @@
 
 !!! note
 
-    `DROP SPACE` can only delete the specified graph space while retain all the data in it by modifying the value of `auto_remove_invalid_space` in the Storage service configuration file. For more information, see [Storage configuration](../../5.configurations-and-logs/1.configurations/4.storage-config.md).
+    `DROP SPACE` can only delete the specified logic graph space while retain all the data on the hard disk by modifying the value of `auto_remove_invalid_space` to `false` in the Storage service configuration file. For more information, see [Storage configuration](../../5.configurations-and-logs/1.configurations/4.storage-config.md).
 
 ## Prerequisites