diff --git a/tidb-cloud/tidb-cloud-glossary.md b/tidb-cloud/tidb-cloud-glossary.md
index b335ddfb010a1..9c0c708d70ac5 100644
--- a/tidb-cloud/tidb-cloud-glossary.md
+++ b/tidb-cloud/tidb-cloud-glossary.md
@@ -154,7 +154,7 @@ Currently, only the following types of TiDB Cloud resources support the Recycle
 
 - TiDB Region
 
-    The basic unit of data in TiDB. TiKV divides the Key-Value space into a series of consecutive Key segments, and each segment is called a Region. The default size limit for each Region is 96 MB and can be configured.
+    The basic unit of data in TiDB. TiKV divides the Key-Value space into a series of consecutive Key segments, and each segment is called a Region. The default size limit for each Region is 256 MiB and can be configured.
 
 ### replica