diff --git a/api/@ohos.application.abilityManager.d.ts b/api/@ohos.application.abilityManager.d.ts
index 5ced77d93ed97c548af8f67b02a1a760a72c33eb..5f996d83664c5823d9867f1dadc36785a61a7346 100644
--- a/api/@ohos.application.abilityManager.d.ts
+++ b/api/@ohos.application.abilityManager.d.ts
@@ -14,7 +14,9 @@
  */
 
 import { AsyncCallback } from './basic';
-import Configuration from './@ohos.application.Configuration';
+import { Configuration } from './@ohos.application.Configuration';
+import { AbilityRunningInfo } from './application/AbilityRunningInfo';
+import { ExtensionRunningInfo } from './application/ExtensionRunningInfo';
 
 /**
  * The class of an ability manager.
@@ -25,6 +27,22 @@ import Configuration from './@ohos.application.Configuration';
  * @permission N/A
  */
 declare namespace abilityManager {
+
+    /**
+     * @name AbilityState
+     * @since 8
+     * @sysCap AAFwk
+     * @devices phone, tablet, tv, wearable, car
+     * @permission N/A
+     */
+    export enum AbilityState {
+        INITIAL = 0,
+        FOREGROUND = 9,
+        BACKGROUND = 10,
+        FOREGROUNDING = 11,
+        BACKGROUNDING = 12
+    }
+
     /**
      * Updates the configuration by modifying the configuration.
      *
@@ -37,4 +55,32 @@ declare namespace abilityManager {
      */
     function updateConfiguration(config: Configuration, callback: AsyncCallback<void>): void;
     function updateConfiguration(config: Configuration): Promise<void>;
-}
\ No newline at end of file
+
+    /**
+     * Get information about running abilitys
+     *
+     * @devices phone, tablet, tv, wearable, car
+     * @since 8
+     * @SysCap AAFwk
+     * @param config Indicates the new configuration.
+     * @systemapi Hide this for inner system use.
+     * @return -
+     */
+    function getAbilityRunningInfos(): Promise<Array<AbilityRunningInfo>>;
+    function getAbilityRunningInfos(callback: AsyncCallback<Array<AbilityRunningInfo>>): void;
+ 
+     /**
+      * Get information about running extensions
+      *
+      * @devices phone, tablet, tv, wearable, car
+      * @since 8
+      * @SysCap AAFwk
+      * @param config Indicates the new configuration.
+      * @systemapi Hide this for inner system use.
+      * @return -
+      */
+    function getExtensionRunningInfos(upperLimit: number): Promise<Array<ExtensionRunningInfo>>;
+    function getExtensionRunningInfos(upperLimit: number, callback: AsyncCallback<Array<ExtensionRunningInfo>>): void;
+}
+
+export default abilityManager;
\ No newline at end of file
diff --git a/api/@ohos.application.appManager.d.ts b/api/@ohos.application.appManager.d.ts
index 77b341b2cccd92cf7559dcd78be263f09fdc54e5..6a1d24787a72b61b802927c550f02e1dd1bc5cf6 100644
--- a/api/@ohos.application.appManager.d.ts
+++ b/api/@ohos.application.appManager.d.ts
@@ -16,6 +16,7 @@
 import { AsyncCallback } from './basic';
 import ApplicationStateObserver from './application/ApplicationStateObserver';
 import AppStateData from './application/AppStateData';
+import { ProcessRunningInfo } from './application/ProcessRunningInfo';
 
 /**
  * This module provides the function of app manager service.
@@ -86,6 +87,18 @@ declare namespace appManager {
      */
       function isRunningInStabilityTest(callback: AsyncCallback<boolean>): void;
       function isRunningInStabilityTest(): Promise<boolean>;
+
+    /**
+    * Get information about running processes
+    *
+    * @devices phone, tablet, tv, wearable, car
+    * @since 8
+    * @SysCap appexecfwk
+    * @systemapi Hide this for inner system use.
+    * @return -
+    */
+    function getProcessRunningInfos(): Promise<Array<ProcessRunningInfo>>;
+    function getProcessRunningInfos(callback: AsyncCallback<Array<ProcessRunningInfo>>): void;
 }
 
 export default appManager;
diff --git a/api/application/AbilityRunningInfo.d.ts b/api/application/AbilityRunningInfo.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d9aa19f8563ef5f0c1d4c3a344e9fdddd8999a1f
--- /dev/null
+++ b/api/application/AbilityRunningInfo.d.ts
@@ -0,0 +1,69 @@
+/*
+ * 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 abilityManager from '../@ohos.application.abilityManager';
+
+/**
+ * The class of an ability running information.
+ *
+ * @since 8
+ * @sysCap AAFwk
+ * @devices phone, tablet, tv, wearable, car
+ * @permission N/A
+ */
+export interface AbilityRunningInfo {
+    /**
+    * @default ability element name
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    ability: ElementName;
+
+    /**
+    * @default process id
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    pid: number;
+
+    /**
+    * @default user id
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    uid: number;
+ 
+    /**
+    * @default the name of the process
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    processName: string;
+
+    /**
+    * @default ability start time
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    startTime: number;
+
+    /**
+    * @default Enumerates state of the ability state info
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    abilityState: abilityManager.AbilityState;
+}
\ No newline at end of file
diff --git a/api/application/ExtensionRunningInfo.d.ts b/api/application/ExtensionRunningInfo.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5cf48045503aa9547e3090cc42851871b4eded8c
--- /dev/null
+++ b/api/application/ExtensionRunningInfo.d.ts
@@ -0,0 +1,77 @@
+/*
+ * 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 bundle from '../@ohos.bundle';
+
+/**
+ * The class of an extension running information.
+ *
+ * @since 8
+ * @sysCap AAFwk
+ * @devices phone, tablet, tv, wearable, car
+ * @permission N/A
+ */
+export interface ExtensionRunningInfo {
+    /**
+    * @default Indicates the extension of the extension info
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    extension: ElementName;
+
+    /**
+    * @default process id
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    pid: number;
+
+    /**
+    * @default user id
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    uid: number;
+
+    /**
+    * @default the name of the process
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    processName: string;
+
+    /**
+    * @default ability start time
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    startTime: number;
+
+    /**
+    * @default All package names under the current process
+    * @since 8
+    * @SysCap SystemCapability.Appexecfwk
+    */
+    clientPackage: Array<String>;
+
+    /**
+    * @default Enumerates types of the entension info
+    * @since 9
+    * @SysCap SystemCapability.Appexecfwk
+    * @StageModelOnly
+    */
+    type: bundle.ExtensionAbilityType;
+}
\ No newline at end of file
diff --git a/api/application/ProcessRunningInfo.d.ts b/api/application/ProcessRunningInfo.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..db9414888a43a7cb039cbc637932b5df6251d3bc
--- /dev/null
+++ b/api/application/ProcessRunningInfo.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.
+ */
+
+/**
+ * The class of an process running information.
+ *
+ * @since 8
+ * @sysCap AAFwk
+ * @devices phone, tablet, tv, wearable, car
+ * @permission N/A
+ */
+export interface ProcessRunningInfo {
+    /**
+     * @default process id
+     * @since 8
+     * @SysCap SystemCapability.Appexecfwk
+     */
+     pid: number;
+
+     /**
+      * @default user id
+      * @since 8
+      * @SysCap SystemCapability.Appexecfwk
+      */
+     uid: number;
+ 
+     /**
+      * @default the name of the process
+      * @since 8
+      * @SysCap SystemCapability.Appexecfwk
+      */
+     processName: string;
+ 
+     /**
+      * @default an array of the bundleNames running in the process
+      * @since 8
+      * @SysCap SystemCapability.Appexecfwk
+      */
+     bundleNames: Array<string>;
+}
\ No newline at end of file