diff --git a/product/en/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md b/product/en/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md
index daa102803d23438114f942731dd431edab8f7cd5..4b0bc6f647c2506e68739368d2d7be8e21ab26d6 100644
--- a/product/en/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md
+++ b/product/en/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md
@@ -19,7 +19,7 @@ date: 2021-06-07
 ## Syntax
 
 ```ebnf+diagram
-AlterAuditPolicy ::= ALTER AUDIT POLICY [ IF EXISTS ] policy_name { ADD | REMOVE } { [ privilege_audit_clause ] [ access_audit_clause ] };
+AlterAuditPolicy ::= ALTER AUDIT POLICY [ IF EXISTS ] policy_name { ADD | REMOVE } ' { [privilege_audit_clause  |  access_audit_clause  } ';
 ```
 
 ```ebnf+diagram
diff --git a/product/zh/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md b/product/zh/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md
index 4427ab94d8523d6b5d7e8d051bb61c2c48c4fee6..c1ab62b2049df15b78f5980c5fc5d411295700b0 100644
--- a/product/zh/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md
+++ b/product/zh/docs-mogdb/v3.1/reference-guide/sql-syntax/ALTER-AUDIT-POLICY.md
@@ -19,7 +19,7 @@ date: 2021-06-07
 ## 语法格式
 
 ```ebnf+diagram
-AlterAuditPolicy ::= ALTER AUDIT POLICY [ IF EXISTS ] policy_name { ADD | REMOVE } { [ privilege_audit_clause ] [ access_audit_clause ] };
+AlterAuditPolicy ::= ALTER AUDIT POLICY [ IF EXISTS ] policy_name { ADD | REMOVE } ' { [privilege_audit_clause  |  access_audit_clause  } ';
 ```
 
 ```ebnf+diagram