diff --git a/docs/api-references/docs.md b/docs/api-references/docs.md
index 6df216cd8f..c331cc2ac5 100644
--- a/docs/api-references/docs.md
+++ b/docs/api-references/docs.md
@@ -3680,7 +3680,8 @@ bool
 <td>
 <em>(Optional)</em>
 <p>Whether enable the syntax like <code>auto_random(3)</code> on the primary key column.
-imported from TiDB v3.1.0</p>
+Imported from TiDB v3.1.0.
+Deprecated in TiDB v4.0.3, please check detail in <a href="https://docs.pingcap.com/tidb/dev/release-4.0.3#improvements">https://docs.pingcap.com/tidb/dev/release-4.0.3#improvements</a>.</p>
 </td>
 </tr>
 <tr>
diff --git a/pkg/apis/pingcap/v1alpha1/openapi_generated.go b/pkg/apis/pingcap/v1alpha1/openapi_generated.go
index 588d5ac31c..1efdd242b8 100644
--- a/pkg/apis/pingcap/v1alpha1/openapi_generated.go
+++ b/pkg/apis/pingcap/v1alpha1/openapi_generated.go
@@ -1417,7 +1417,7 @@ func schema_pkg_apis_pingcap_v1alpha1_Experimental(ref common.ReferenceCallback)
 				Properties: map[string]spec.Schema{
 					"allow-auto-random": {
 						SchemaProps: spec.SchemaProps{
-							Description: "Whether enable the syntax like `auto_random(3)` on the primary key column. imported from TiDB v3.1.0",
+							Description: "Whether enable the syntax like `auto_random(3)` on the primary key column. Imported from TiDB v3.1.0. Deprecated in TiDB v4.0.3, please check detail in https://docs.pingcap.com/tidb/dev/release-4.0.3#improvements.",
 							Type:        []string{"boolean"},
 							Format:      "",
 						},
diff --git a/pkg/apis/pingcap/v1alpha1/tidb_config.go b/pkg/apis/pingcap/v1alpha1/tidb_config.go
index 13678fc73d..b97c3acb65 100644
--- a/pkg/apis/pingcap/v1alpha1/tidb_config.go
+++ b/pkg/apis/pingcap/v1alpha1/tidb_config.go
@@ -530,7 +530,8 @@ type IsolationRead struct {
 // +k8s:openapi-gen=true
 type Experimental struct {
 	// Whether enable the syntax like `auto_random(3)` on the primary key column.
-	// imported from TiDB v3.1.0
+	// Imported from TiDB v3.1.0.
+	// Deprecated in TiDB v4.0.3, please check detail in https://docs.pingcap.com/tidb/dev/release-4.0.3#improvements.
 	// +optional
 	AllowAutoRandom *bool `toml:"allow-auto-random,omitempty" json:"allow-auto-random,omitempty"`
 	// Whether enable creating expression index.