diff --git a/docs/zh/08-operation/04-maintenance.md b/docs/zh/08-operation/04-maintenance.md
index 9ef165179d..a82d8c2c17 100644
--- a/docs/zh/08-operation/04-maintenance.md
+++ b/docs/zh/08-operation/04-maintenance.md
@@ -19,7 +19,8 @@ TDengine 面向多种写入场景，而很多写入场景下，TDengine 的存
 ```SQL
 COMPACT DATABASE db_name [start with 'XXXX'] [end with 'YYYY']； 
 COMPACT [db_name.]VGROUPS IN (vgroup_id1, vgroup_id2, ...) [start with 'XXXX'] [end with 'YYYY']；
-SHOW COMPACTS [compact_id]；
+SHOW COMPACTS；
+SHOW COMPACT compact_id;
 KILL COMPACT compact_id；
 ```