diff --git a/docs/en/14-reference/03-taos-sql/02-database.md b/docs/en/14-reference/03-taos-sql/02-database.md
index 215353c2ab..94517178c1 100644
--- a/docs/en/14-reference/03-taos-sql/02-database.md
+++ b/docs/en/14-reference/03-taos-sql/02-database.md
@@ -212,3 +212,18 @@ SHOW db_name.ALIVE;
 ```
 
 Query the availability status of the database db_name, with return values of 0 (unavailable), 1 (fully available), or 2 (partially available, indicating that some VNODEs in the database are available while others are not).
+
+## View DB Disk Usage 
+
+```sql 
+select * from  INFORMATION_SCHEMA.INS_DISK_USAGE where db_name = 'db_name'   
+```  
+
+View the disk usage of each module in the DB.
+
+```sql
+SHOW db_name.disk_info;
+```
+View the compression ratio and disk usage of the database db_name
+
+This command is essentially equivalent to `select sum(data1 + data2 + data3)/sum(raw_data), sum(data1 + data2 + data3) from information_schema.ins_disk_usage where db_name="dbname"`
\ No newline at end of file
diff --git a/docs/en/14-reference/03-taos-sql/22-meta.md b/docs/en/14-reference/03-taos-sql/22-meta.md
index d6abd7bf3b..f934bd0bab 100644
--- a/docs/en/14-reference/03-taos-sql/22-meta.md
+++ b/docs/en/14-reference/03-taos-sql/22-meta.md
@@ -325,3 +325,21 @@ Note: Users with SYSINFO set to 0 cannot view this table.
 | 3    |     db_name     | VARCHAR(65)    | Database name                        |
 | 4    |   table_name    | VARCHAR(193)   | Table name                           |
 | 5    |    condition    | VARCHAR(49152) | Subtable permission filter condition |
+
+
+## INS_DISK_USAGE
+
+| #   |   **Column Name**    | **Data type** | **Description**|
+| --- | :----------: | ------------ | ------------------------|
+| 1   | db_name      | VARCHAR(32)       | Database name 
+| 2   | vgroup_id    | INT       | vgroup ID 
+| 3   | wal          | BIGINT    | WAL file size, in KB
+| 4   | data1        | BIGINT    | Data file size on primary storage, in KB 
+| 5   | data2        | BIGINT    | Data file size on secondary storage, in KB
+| 6   | data3        | BIGINT    | Data file size on tertiary storage, in KB 
+| 7   | cache_rdb    | BIGINT    | Size of last/last_row files, in KB
+| 8   | table_meta   | BIGINT    | Size of meta files, in KB 
+| 9   | s3           | BIGINT    | Size occupied on S3, in KB
+| 10  | raw_data     | BIGINT    | Estimated size of raw data, in KB
+
+note: 
\ No newline at end of file
diff --git a/docs/zh/14-reference/03-taos-sql/02-database.md b/docs/zh/14-reference/03-taos-sql/02-database.md
index 1ccc5071f0..9856089713 100644
--- a/docs/zh/14-reference/03-taos-sql/02-database.md
+++ b/docs/zh/14-reference/03-taos-sql/02-database.md
@@ -217,3 +217,21 @@ SHOW db_name.ALIVE;
 ```
 
 查询数据库 db_name 的可用状态，返回值 0：不可用 1：完全可用 2：部分可用（即数据库包含的 VNODE 部分节点可用，部分节点不可用）
+
+## 查看DB 的磁盘空间占用
+
+```sql 
+select * from  INFORMATION_SCHEMA.INS_DISK_USAGE where db_name = 'db_name'   
+```  
+查看DB各个模块所占用磁盘的大小
+
+```sql
+SHOW db_name.disk_info;
+```
+查看数据库 db_name 的数据压缩压缩率和数据在磁盘上所占用的大小
+
+该命令本质上等同于 `select sum(data1 + data2 + data3)/sum(raw_data), sum(data1 + data2 + data3) from information_schema.ins_disk_usage where db_name="dbname"`
+
+
+
+
diff --git a/docs/zh/14-reference/03-taos-sql/22-meta.md b/docs/zh/14-reference/03-taos-sql/22-meta.md
index b61e06f759..74b327cbac 100644
--- a/docs/zh/14-reference/03-taos-sql/22-meta.md
+++ b/docs/zh/14-reference/03-taos-sql/22-meta.md
@@ -326,3 +326,20 @@ TDengine 内置了一个名为 `INFORMATION_SCHEMA` 的数据库，提供对数
 | 3   | db_name      | VARCHAR(65)       | 数据库名称
 | 4   | table_name   | VARCHAR(193)      | 表名称
 | 5   | condition    | VARCHAR(49152)    | 子表权限过滤条件
+
+## INS_DISK_USAGE
+
+| #   |   **列名**    | **数据类型** | **说明**                                                                                                             |
+| --- | :----------: | ------------ | -------------------------------------------------------------------------------------------------------------------- |
+| 1   | db_name      | VARCHAR(32)       | 数据库名称 
+| 2   | vgroup_id    | INT       | vgroup 的 ID 
+| 3   | wal          | BIGINT    | wal 文件大小, 单位为 K
+| 4   | data1        | BIGINT    | 一级存储上数据文件的大小,单位为KB 
+| 5   | data2        | BIGINT    | 二级存储上数据文件的大小,单位为 KB
+| 6   | data3        | BIGINT    | 三级存储上数据文件的大小, 单位为KB 
+| 7   | cache_rdb    | BIGINT    | last/last_row 文件的大小,单位为KB
+| 8   | table_meta   | BIGINT    | meta 文件的大小, 单位为KB 
+| 9   | s3           | BIGINT    | s3 上占用的大小, 单位为KB
+| 10   | raw_data  | BIGINT    | 预估的原始数据的大小, 单位为KB 
+
+