diff --git a/system-variables.md b/system-variables.md
index 7ed885a357e6c..c6dbe3f5307f8 100644
--- a/system-variables.md
+++ b/system-variables.md
@@ -1291,34 +1291,34 @@ SET tidb_slow_log_threshold = 200;
- Scope: SESSION | GLOBAL
- Default value: `24`
- Range: `[0, 255]`
-- This variable is used to set the history capacity of the statement summary.
+- This variable is used to set the history capacity of [statement summary tables](/statement-summary-tables.md).
### tidb_stmt_summary_internal_query New in v4.0
- Scope: SESSION | GLOBAL
- Default value: `OFF`
-- This variable is used to control whether to include the SQL information of TiDB in the statement summary.
+- This variable is used to control whether to include the SQL information of TiDB in [statement summary tables](/statement-summary-tables.md).
### tidb_stmt_summary_max_sql_length New in v4.0
- Scope: SESSION | GLOBAL
- Default value: `4096`
- Range: `[0, 2147483647]`
-- This variable is used to control the length of the SQL string in the statement summary.
+- This variable is used to control the length of the SQL string in [statement summary tables](/statement-summary-tables.md).
### tidb_stmt_summary_max_stmt_count New in v4.0
- Scope: SESSION | GLOBAL
- Default value: `3000`
- Range: `[1, 32767]`
-- This variable is used to set the maximum number of statements that the statement summary stores in memory.
+- This variable is used to set the maximum number of statements that [statement summary tables](/statement-summary-tables.md) store in memory.
### tidb_stmt_summary_refresh_interval New in v4.0
- Scope: SESSION | GLOBAL
- Default value: `1800`
- Range: `[1, 2147483647]`
-- This variable is used to set the refresh time of the statement summary. The unit is second.
+- This variable is used to set the refresh time of [statement summary tables](/statement-summary-tables.md). The unit is second.
### tidb_store_limit New in v3.0.4 and v4.0
diff --git a/tidb-configuration-file.md b/tidb-configuration-file.md
index 3211ee8045138..a740e71a25844 100644
--- a/tidb-configuration-file.md
+++ b/tidb-configuration-file.md
@@ -610,16 +610,16 @@ Configuration related to the status of TiDB service.
## stmt-summary New in v3.0.4
-Configurations related to the `statements_summary` table.
+Configurations related to [statement summary tables](/statement-summary-tables.md).
### max-stmt-count
-- The maximum number of SQL categories allowed to be saved in the `statements_summary` table.
+- The maximum number of SQL categories allowed to be saved in [statement summary tables](/statement-summary-tables.md).
- Default value: `3000`
### max-sql-length
-- The longest display length for the `DIGEST_TEXT` and `QUERY_SAMPLE_TEXT` columns in the `statements_summary` table.
+- The longest display length for the `DIGEST_TEXT` and `QUERY_SAMPLE_TEXT` columns in [statement summary tables](/statement-summary-tables.md).
- Default value: `4096`
## pessimistic-txn