diff --git a/api/@ohos.ability.featureAbility.d.ts b/api/@ohos.ability.featureAbility.d.ts
index e6a0b227b8fdac90f73ea2fd2494b7108bfd1fca..9a9170e063ce5aeffa4e30aa65db24d543c714c2 100644
--- a/api/@ohos.ability.featureAbility.d.ts
+++ b/api/@ohos.ability.featureAbility.d.ts
@@ -18,6 +18,8 @@ import { StartAbilityParameter } from './ability/startAbilityParameter';
 import { AbilityResult } from './ability/abilityResult';
 import { Context } from './app/context';
 import { DataAbilityHelper } from './ability/dataAbilityHelper';
+import { ConnectOptions } from './ability/connectOptions';
+
 /**
  * A Feature Ability represents an ability with a UI and is designed to interact with users.
  * @name featureAbility
@@ -117,6 +119,29 @@ declare namespace featureAbility {
   function hasWindowFocus(callback: AsyncCallback<boolean>): void;
   function hasWindowFocus(): Promise<boolean>;
 
+  /**
+   * Connects the current ability to an ability using the AbilityInfo.AbilityType.SERVICE template.
+   * @default -
+   * @devices phone, tablet
+   * @since 7
+   * @SysCap aafwk
+   * @param request The element name of the service ability
+   * @param options The remote object instance
+   * @return Returns the number code of the ability connected
+   */
+  function connectAbility(request: Want, options:ConnectOptions ): number;
+
+  /**
+  * The callback interface was connect successfully.
+  * @default -
+  * @devices phone, tablet
+  * @since 7
+  * @SysCap aafwk
+  * @param connection The number code of the ability connected
+  */
+  function disconnectAbility(connection: number, callback:AsyncCallback<void>): void;
+  function disconnectAbility(connection: number): Promise<void>;
+
   export enum AbilityWindowConfiguration {
     WINDOW_MODE_UNDEFINED = 0,
     WINDOW_MODE_FULLSCREEN = 1,
diff --git a/api/ability/connectOptions.d.ts b/api/ability/connectOptions.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c718f678c3b1a8efde126c16d3378e9e0a91ebf8
--- /dev/null
+++ b/api/ability/connectOptions.d.ts
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ElementName } from '../bundle/elementName';
+import rpc from './../@ohos.rpc';
+
+export interface ConnectOptions {
+  /**
+   * The callback interface was connect successfully.
+   *
+   * @default -
+   * @devices phone, tablet
+   * @since 7
+   * @SysCap aafwk
+   * @param elementName The element name of the service ability
+   * @param remoteObject The remote object instance
+   */
+  onConnect: (elementName: ElementName, remoteObject: RemoteObject) => void;
+
+  /**
+   * The callback interface was disconnect successfully.
+   *
+   * @default -
+   * @devices phone, tablet
+   * @since 7
+   * @SysCap aafwk
+   * @param elementName The element name of the service ability
+   */
+  onDisconnect: (elementName: ElementName) => void;
+
+  /**
+   * The callback interface was connect failed.
+   *
+   * @default -
+   * @devices phone, tablet
+   * @since 7
+   * @SysCap aafwk
+   * @param code The error code of the failed.
+   */
+  onFailed: (code: number) => void;
+}