diff --git a/docs/en/administrator-guide/config/be_config.md b/docs/en/administrator-guide/config/be_config.md
index c97416ccc2..0905fbf31b 100644
--- a/docs/en/administrator-guide/config/be_config.md
+++ b/docs/en/administrator-guide/config/be_config.md
@@ -214,7 +214,7 @@ Clean up pages that may be saved by the buffer pool
 
 * Type: string
 * Description: The largest allocatable memory of the buffer pool
-* Default value: 80G
+* Default value: 20%
 
 The maximum amount of memory available in the BE buffer pool. The buffer pool is a new memory management structure of BE, which manages the memory by the buffer page and enables spill data to disk. The memory for all concurrent queries will be allocated from the buffer pool. The current buffer pool only works on **AggregationNode** and **ExchangeNode**.
 
@@ -1523,4 +1523,4 @@ Translated with www.DeepL.com/Translator (free version)
 ### `string_type_length_soft_limit_bytes`
 * Type: int32
 * Description: A soft limit of string type length.
-* Description: 1048576
\ No newline at end of file
+* Description: 1048576
diff --git a/docs/zh-CN/administrator-guide/config/be_config.md b/docs/zh-CN/administrator-guide/config/be_config.md
index 3294b36394..2c6bf8bf99 100644
--- a/docs/zh-CN/administrator-guide/config/be_config.md
+++ b/docs/zh-CN/administrator-guide/config/be_config.md
@@ -207,7 +207,7 @@ Metrics: {"filtered_rows":0,"input_row_num":3346807,"input_rowsets_count":42,"in
 
 * 类型：string
 * 描述：buffer pool之中最大的可分配内存
-* 默认值：80G
+* 默认值：20%
 
 BE缓存池最大的内存可用量，buffer pool是BE新的内存管理结构，通过buffer page来进行内存管理，并能够实现数据的落盘。并发的所有查询的内存申请都会通过buffer pool来申请。当前buffer pool仅作用在**AggregationNode**与**ExchangeNode**。