diff --git a/releases/release-6.4.0.md b/releases/release-6.4.0.md
index 7678b51e1f207..3cd7eda18d51e 100644
--- a/releases/release-6.4.0.md
+++ b/releases/release-6.4.0.md
@@ -301,8 +301,8 @@ In v6.4.0-DMR, the key new features and improvements are as follows:
 | TiDB | `tidb_memory_usage_alarm_ratio` | Deleted | This configuration item is no longer effective. |
 | TiDB | `memory-usage-alarm-ratio` | Deleted | Replaced by the system variable [`tidb_memory_usage_alarm_ratio`](/system-variables.md#tidb_memory_usage_alarm_ratio). If this configuration item has been configured in a TiDB version earlier than v6.4.0, it will not take effect after the upgrade. |
 | TiDB | [`pessimistic-txn.constraint-check-in-place-pessimistic`](/tidb-configuration-file.md#constraint-check-in-place-pessimistic-new-in-v640) | Newly added | Controls the default value of the system variable [`tidb_constraint_check_in_place_pessimistic`](/system-variables.md#tidb_constraint_check_in_place_pessimistic-new-in-v630). The default value is `true`. |
-| TiDB | [`tidb_max_reuse_chunk`](/tidb-configuration-file.md#tidb_max_reuse_chunk-new-in-v640) | Newly added | Controls the maximum cached chunk objects of chunk allocation. The default value is `64`.|
-| TiDB | [`tidb_max_reuse_column`](/tidb-configuration-file.md#tidb_max_reuse_column-new-in-v640) | Newly added | Controls the maximum cached column objects of chunk allocation. The default value is `256`. |
+| TiDB | [`tidb-max-reuse-chunk`](/tidb-configuration-file.md#tidb-max-reuse-chunk-new-in-v640) | Newly added | Controls the maximum cached chunk objects of chunk allocation. The default value is `64`.|
+| TiDB | [`tidb-max-reuse-column`](/tidb-configuration-file.md#tidb-max-reuse-column-new-in-v640) | Newly added | Controls the maximum cached column objects of chunk allocation. The default value is `256`. |
 | TiKV | [`cdc.raw-min-ts-outlier-threshold`](/tikv-configuration-file.md#raw-min-ts-outlier-threshold-new-in-v620) | Deprecated | This configuration item is no longer effective. |
 | TiKV | [`causal-ts.alloc-ahead-buffer`](/tikv-configuration-file.md#alloc-ahead-buffer-new-in-v640) | Newly added | The pre-allocated TSO cache size (in duration). The default value is `3s`. |
 | TiKV | [`causal-ts.renew-batch-max-size`](/tikv-configuration-file.md#renew-batch-max-size-new-in-v640)| Newly added | Controls the maximum number of TSOs in a timestamp request. The default value is `8192`. |
diff --git a/tidb-configuration-file.md b/tidb-configuration-file.md
index 124e789905b01..2ee36b42843d1 100644
--- a/tidb-configuration-file.md
+++ b/tidb-configuration-file.md
@@ -16,14 +16,14 @@ The TiDB configuration file supports more options than command-line parameters.
 - Default value: `true`
 - It is recommended to set it to `false` if you need to create a large number of tables (for example, more than 100 thousand tables).
 
-### `tidb_max_reuse_chunk` <span class="version-mark">New in v6.4.0</span>
+### `tidb-max-reuse-chunk` <span class="version-mark">New in v6.4.0</span>
 
 - Controls the maximum cached chunk objects of chunk allocation. Setting this configuration item to too large a value might increase the risk of OOM.
 - Default value: `64`
 - Minimum value: `0`
 - Maximum value: `2147483647`
 
-### `tidb_max_reuse_column` <span class="version-mark">New in v6.4.0</span>
+### `tidb-max-reuse-column` <span class="version-mark">New in v6.4.0</span>
 
 - Controls the maximum cached column objects of chunk allocation. Setting this configuration item to too large a value might increase the risk of OOM.
 - Default value: `256`