diff --git a/docs/en/14-reference/03-taos-sql/03-table.md b/docs/en/14-reference/03-taos-sql/03-table.md
index 561f479aa3..e6a704a974 100644
--- a/docs/en/14-reference/03-taos-sql/03-table.md
+++ b/docs/en/14-reference/03-taos-sql/03-table.md
@@ -161,7 +161,7 @@ ALTER TABLE [db_name.]tb_name alter_table_clause
 
 alter_table_clause: {
     alter_table_options
-  | SET TAG tag_name = new_tag_value
+  | SET TAG tag_name = new_tag_value,tag_name2=new_tag2_value...
 }
 
 alter_table_options:
diff --git a/docs/zh/14-reference/03-taos-sql/03-table.md b/docs/zh/14-reference/03-taos-sql/03-table.md
index 40e2802fcd..4bf1bd5b87 100644
--- a/docs/zh/14-reference/03-taos-sql/03-table.md
+++ b/docs/zh/14-reference/03-taos-sql/03-table.md
@@ -171,7 +171,7 @@ ALTER TABLE [db_name.]tb_name alter_table_clause
 
 alter_table_clause: {
     alter_table_options
-  | SET TAG tag_name = new_tag_value
+  | SET TAG tag_name = new_tag_value,tag_name2=new_tag2_value...
 }
 
 alter_table_options: