diff --git a/api/@ohos.security.cert.d.ts b/api/@ohos.security.cert.d.ts
index 54ceff022aa3b26457d1f2f42573f7214cc21585..a910750fb3892fdc843388e14bc4b5bdbd806fe3 100644
--- a/api/@ohos.security.cert.d.ts
+++ b/api/@ohos.security.cert.d.ts
@@ -6038,6 +6038,25 @@ declare namespace cert {
      * @since 12
      */
     keyUsage?: Array<KeyUsageType>;
+
+    /**
+     * Indicates whether to use system preinstalled CA certificates to verify the certificate chain.
+     * 
+     * If set to true and trustAnchors is not an empty array, both user trustAnchors and system preinstalled CA
+     * certificates are used to verify the certificate chain.
+     * 
+     * If set to true and trustAnchors is an empty array, only system preinstalled CA certificates are used to verify
+     * the certificate chain.
+     *
+     * @type { ?boolean }
+     * @default false
+     * @syscap SystemCapability.Security.Cert
+     * @crossplatform
+     * @atomicservice
+     * @since arkts {'1.1':'20','1.2':'20'}
+     * @arkts 1.1&1.2
+     */
+    trustSystemCa?: boolean;
   }
 
   /**