diff --git a/system-variables.md b/system-variables.md
index 15cfe1b9be5de..c8074a10acd5f 100644
--- a/system-variables.md
+++ b/system-variables.md
@@ -2578,6 +2578,14 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
 
 </CustomContent>
 
+### tidb_enable_point_get_cache
+
+- Scope: SESSION
+- Applies to hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value): YES
+- Type: Boolean
+- Default value: `OFF`
+- When you set the table lock type of [`LOCK TABLES`](/sql-statements/sql-statement-lock-tables-and-unlock-tables.md) to `READ`, setting this variable to `ON` enables caching of point query results, reducing the overhead of repeated queries and improving point query performance.
+
 ### tidb_enable_prepared_plan_cache <span class="version-mark">New in v6.1.0</span>
 
 - Scope: SESSION | GLOBAL