diff --git a/docs/api-references/docs.md b/docs/api-references/docs.md
index a53aedc0526..197ac81a458 100644
--- a/docs/api-references/docs.md
+++ b/docs/api-references/docs.md
@@ -3172,7 +3172,7 @@ CrdKind
 <tbody>
 <tr>
 <td>
-<code>tidb_cacert_path</code></br>
+<code>tidb-cacert-path</code></br>
 <em>
 string
 </em>
@@ -3183,7 +3183,7 @@ string
 </tr>
 <tr>
 <td>
-<code>tidb_cert_path</code></br>
+<code>tidb-cert-path</code></br>
 <em>
 string
 </em>
@@ -3194,7 +3194,18 @@ string
 </tr>
 <tr>
 <td>
-<code>tidb_key_path</code></br>
+<code>tidb-key-path</code></br>
+<em>
+string
+</em>
+</td>
+<td>
+<em>(Optional)</em>
+</td>
+</tr>
+<tr>
+<td>
+<code>public-path-prefix</code></br>
 <em>
 string
 </em>
diff --git a/pkg/apis/pingcap/v1alpha1/pd_config.go b/pkg/apis/pingcap/v1alpha1/pd_config.go
index 55a346dcd4f..eb558984549 100644
--- a/pkg/apis/pingcap/v1alpha1/pd_config.go
+++ b/pkg/apis/pingcap/v1alpha1/pd_config.go
@@ -126,11 +126,13 @@ type PDConfig struct {
 // DashboardConfig is the configuration for tidb-dashboard.
 type DashboardConfig struct {
 	// +optional
-	TiDBCAPath *string `toml:"tidb-cacert-path,omitempty" json:"tidb_cacert_path,omitempty"`
+	TiDBCAPath *string `toml:"tidb-cacert-path,omitempty" json:"tidb-cacert-path,omitempty"`
 	// +optional
-	TiDBCertPath *string `toml:"tidb-cert-path,omitempty" json:"tidb_cert_path,omitempty"`
+	TiDBCertPath *string `toml:"tidb-cert-path,omitempty" json:"tidb-cert-path,omitempty"`
 	// +optional
-	TiDBKeyPath *string `toml:"tidb-key-path,omitempty" json:"tidb_key_path,omitempty"`
+	TiDBKeyPath *string `toml:"tidb-key-path,omitempty" json:"tidb-key-path,omitempty"`
+	// +optional
+	PublicPathPrefix *string `toml:"public-path-prefix,omitempty" json:"public-path-prefix,omitempty"`
 }
 
 // PDLogConfig serializes log related config in toml/json.
diff --git a/pkg/apis/pingcap/v1alpha1/zz_generated.deepcopy.go b/pkg/apis/pingcap/v1alpha1/zz_generated.deepcopy.go
index 24d14afe2b4..e75f8dab81e 100644
--- a/pkg/apis/pingcap/v1alpha1/zz_generated.deepcopy.go
+++ b/pkg/apis/pingcap/v1alpha1/zz_generated.deepcopy.go
@@ -767,6 +767,11 @@ func (in *DashboardConfig) DeepCopyInto(out *DashboardConfig) {
 		*out = new(string)
 		**out = **in
 	}
+	if in.PublicPathPrefix != nil {
+		in, out := &in.PublicPathPrefix, &out.PublicPathPrefix
+		*out = new(string)
+		**out = **in
+	}
 	return
 }