diff --git a/api/@ohos.nfc.cardEmulation.d.ts b/api/@ohos.nfc.cardEmulation.d.ts
index a31e7366929f3b4498933fca78c841717cd06016..4617a401996e7e486ff7712a173471f510f9482b 100755
--- a/api/@ohos.nfc.cardEmulation.d.ts
+++ b/api/@ohos.nfc.cardEmulation.d.ts
@@ -13,6 +13,7 @@
  * limitations under the License.
  */
 import { AsyncCallback } from './basic';
+import { ElementName } from './bundle/elementName';
 
 /**
  * Provides methods to operate or manage NFC card emulation.
@@ -34,6 +35,19 @@ declare namespace cardEmulation {
     ESE = 2,
   }
 
+  /**
+   * Define the card emulation type, payment or other.
+   *
+   * @since 9
+   */
+  enum CardType {
+    /** payment type of card emulation */
+    PAYMENT = "payment",
+
+    /** other type of card emulation */
+    OTHER = "other",
+  }
+
   /**
    * Checks whether a specified type of card emulation is supported.
    *
@@ -47,6 +61,20 @@ declare namespace cardEmulation {
    */
   function isSupported(feature: number): boolean;
 
+  /**
+   * Checks whether a service is default for given type.
+   *
+   * @param { ElementName } elementName - The element name of the service ability
+   * @param { CardType } type - The type to query, pyament or other.
+   * @return { boolean } Returns true if the service is default, otherwise false.
+   * @permission ohos.permission.NFC_CARD_EMULATION
+   * @throws { BusinessError } 201 - Permission denied.
+   * @throws { BusinessError } 401 - The parameter check failed.
+   * @throws { BusinessError } 801 - Capability not supported.
+   * @since 9
+   */
+  function isDefaultService(elementName: ElementName, type: CardType): boolean;
+
   /**
    * A class for NFC host application.
    *