diff --git a/docs/en/12-taos-sql/02-database.md b/docs/en/12-taos-sql/02-database.md
index af619c11a5c5ca1e72b7ee6edc4b3106da1e0f1c..68dba3fc564657ee19dc66d40415c9d964cbe216 100644
--- a/docs/en/12-taos-sql/02-database.md
+++ b/docs/en/12-taos-sql/02-database.md
@@ -43,7 +43,7 @@ database_option: {
 
 ## Parameters
 
-- BUFFER: specifies the size (in MB) of the write buffer for each vnode. Enter a value between 3 and 16384. The default value is 96.
+- BUFFER: specifies the size (in MB) of the write buffer for each vnode. Enter a value between 3 and 16384. The default value is 256.
 - CACHEMODEL: specifies how the latest data in subtables is stored in the cache. The default value is none.
   - none: The latest data is not cached.
   - last_row: The last row of each subtable is cached. This option significantly improves the performance of the LAST_ROW function.
diff --git a/docs/zh/12-taos-sql/02-database.md b/docs/zh/12-taos-sql/02-database.md
index b329413aa821c2aa10b3f93927e6deb8a8b3ad46..d79a985089bd97fd0e4327c0d655f5187bd642c0 100644
--- a/docs/zh/12-taos-sql/02-database.md
+++ b/docs/zh/12-taos-sql/02-database.md
@@ -42,7 +42,7 @@ database_option: {
 
 ### 参数说明
 
-- BUFFER: 一个 VNODE 写入内存池大小，单位为 MB，默认为 96，最小为 3，最大为 16384。
+- BUFFER: 一个 VNODE 写入内存池大小，单位为 MB，默认为 256，最小为 3，最大为 16384。
 - CACHEMODEL：表示是否在内存中缓存子表的最近数据。默认为 none。
   - none：表示不缓存。
   - last_row：表示缓存子表最近一行数据。这将显著改善 LAST_ROW 函数的性能表现。