diff --git a/en/application-dev/reference/apis/Readme-EN.md b/en/application-dev/reference/apis/Readme-EN.md
index d17726d0077e2506ca4337342d84f07c00233274..f7c9b469e10d06763183f9f488aefa0ca39d5775 100644
--- a/en/application-dev/reference/apis/Readme-EN.md
+++ b/en/application-dev/reference/apis/Readme-EN.md
@@ -43,6 +43,10 @@
   - application/[ProcessRunningInfo](js-apis-processrunninginfo.md)
   - application/[ServiceExtensionContext](js-apis-service-extension-context.md)
   - application/[shellCmdResult](js-apis-application-shellCmdResult.md)
+  - application/[AbilityManager (AbilityManager)](js-apis-abilityManager.md)
+  - application/[ExtensionAbilityContext (ExtensionAbilityContext)](js-apis-extension-ability-context.md)
+  - application/[ExtensionAbilityInfo (ExtensionAbilityInfo)](js-apis-extensionAbilityInfo.md)
+  - application/[ServiceExtAbilityContext (ServiceExtAbilityContext)](js-apis-serviceExtAbilityContext.md)
 - Common Event and Notification
 
   - [@ohos.commonEvent](js-apis-commonEvent.md)
diff --git a/en/application-dev/reference/apis/js-apis-abilityManager.md b/en/application-dev/reference/apis/js-apis-abilityManager.md
new file mode 100644
index 0000000000000000000000000000000000000000..ccd0cd96c51f747588cb30bd7a3144fd34534c9c
--- /dev/null
+++ b/en/application-dev/reference/apis/js-apis-abilityManager.md
@@ -0,0 +1,204 @@
+# AbilityManager
+
+> **NOTE**<br/>
+>
+> The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+>
+> API version 9 is a canary version for trial use. The APIs of this version may be unstable.
+
+# Modules to Import
+
+```js
+import AbilityManager from '@ohos.application.abilityManager'
+```
+
+## AbilityState
+
+Enumerates the ability states.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+| Name| Value| Description| 
+| -------- | -------- | -------- |
+| INITIAL | 0 | The ability is in the initial state.| 
+| FOREGROUND | 9 | The ability is in the foreground state. | 
+| BACKGROUND | 10 | The ability is in the background state. | 
+| FOREGROUNDING | 11 | The ability is in the foregrounding state. | 
+| BACKGROUNDING | 12 | The ability is in the backgrounding state. | 
+
+
+## updateConfiguration
+
+updateConfiguration(config: Configuration, callback: AsyncCallback\<void>): void
+
+Updates the configuration. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name       | Type                                      | Mandatory  | Description            |
+| --------- | ---------------------------------------- | ---- | -------------- |
+| config    | Configuration                            | Yes   | New configuration.|
+| callback  | AsyncCallback\<void>                   | Yes   | Callback used to return the result.     |
+
+**Example**
+
+```js
+import abilitymanager from '@ohos.application.abilityManager';
+
+var config = {
+  language: 'chinese' 
+}
+
+abilitymanager.updateConfiguration(config, () => {
+    console.log('------------ updateConfiguration -----------');
+})
+```
+
+## updateConfiguration
+
+updateConfiguration(config: Configuration): Promise\<void>
+
+Updates the configuration. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name       | Type                                      | Mandatory  | Description            |
+| --------- | ---------------------------------------- | ---- | -------------- |
+| config    | Configuration                            | Yes   | New configuration.|
+
+**Return value**
+
+| Type                                      | Description     |
+| ---------------------------------------- | ------- |
+| Promise\<void> | Promised used to return the result.|
+
+**Example**
+
+```js
+import abilitymanager from '@ohos.application.abilityManager';
+
+var config = {
+  language: 'chinese' 
+}
+
+abilitymanager.updateConfiguration(config).then(() => {
+  console.log('updateConfiguration success');
+}).catch((err) => {
+  console.log('updateConfiguration fail');
+})
+```
+
+## getAbilityRunningInfos
+
+getAbilityRunningInfos(callback: AsyncCallback\<Array\<AbilityRunningInfo>>): void
+
+Obtains the ability running information. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name       | Type                                      | Mandatory  | Description            |
+| --------- | ---------------------------------------- | ---- | -------------- |
+| callback  | AsyncCallback\<Array\<AbilityRunningInfo>>  | Yes   | Callback used to return the result.     |
+
+**Example**
+
+```js
+import abilitymanager from '@ohos.application.abilityManager';
+
+abilitymanager.getAbilityRunningInfos((err,data) => { 
+    console.log("getAbilityRunningInfos err: "  + err + " data: " + JSON.stringify(data));
+});
+```
+
+## getAbilityRunningInfos
+
+getAbilityRunningInfos(): Promise\<Array\<AbilityRunningInfo>>
+
+Obtains the ability running information. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Return value**
+
+| Type                                      | Description     |
+| ---------------------------------------- | ------- |
+| Promise\<Array\<AbilityRunningInfo>> | Promised used to return the result.|
+
+**Example**
+
+```js
+import abilitymanager from '@ohos.application.abilityManager';
+
+abilitymanager.getAbilityRunningInfos().then((data) => {
+    console.log("getAbilityRunningInfos  data: " + JSON.stringify(data))
+}).catch((err) => {
+  console.log("getAbilityRunningInfos err: "  + err)
+});
+```
+
+## getExtensionRunningInfos<sup>9+</sup>
+
+getExtensionRunningInfos(upperLimit: number, callback: AsyncCallback\<Array\<ExtensionRunningInfo>>): void
+
+Obtains the extension running information. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name       | Type                                      | Mandatory  | Description            |
+| --------- | ---------------------------------------- | ---- | -------------- |
+| upperLimit | number                                   | Yes| Maximum number of messages that can be obtained.|
+| callback  | AsyncCallback\<Array\<AbilityRunningInfo>>  | Yes   | Callback used to return the result.     |
+
+**Example**
+
+```js
+import abilitymanager from '@ohos.application.abilityManager';
+
+var upperLimit = 0;
+
+abilitymanager.getExtensionRunningInfos(upperLimit, (err,data) => { 
+    console.log("getExtensionRunningInfos err: "  + err + " data: " + JSON.stringify(data));
+});
+```
+
+## getExtensionRunningInfos<sup>9+</sup>
+
+getExtensionRunningInfos(upperLimit: number): Promise\<Array\<ExtensionRunningInfo>>
+
+Obtains the extension running information. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name       | Type                                      | Mandatory  | Description            |
+| --------- | ---------------------------------------- | ---- | -------------- |
+| upperLimit | number                                   | Yes| Maximum number of messages that can be obtained.|
+
+**Return value**
+
+| Type                                      | Description     |
+| ---------------------------------------- | ------- |
+| Promise\<Array\<AbilityRunningInfo>> | Promised used to return the result.|
+
+**Example**
+
+```js
+import abilitymanager from '@ohos.application.abilityManager';
+
+var upperLimit = 0;
+
+abilitymanager.getExtensionRunningInfos(upperLimit).then((data) => {
+  console.log("getAbilityRunningInfos data: " + JSON.stringify(data));
+}).catch((err) => {
+  console.log("getAbilityRunningInfos err: "  + err);
+})
+```
diff --git a/en/application-dev/reference/apis/js-apis-extension-ability-context.md b/en/application-dev/reference/apis/js-apis-extension-ability-context.md
new file mode 100644
index 0000000000000000000000000000000000000000..62064b2b315190772607710faaf150db36d65491
--- /dev/null
+++ b/en/application-dev/reference/apis/js-apis-extension-ability-context.md
@@ -0,0 +1,17 @@
+# ExtensionAbilityContext
+
+> **NOTE**<br/>
+>
+> The initial APIs of this module are supported since API version 9. API version 9 is a canary version for trial use. The APIs of this version may be unstable.
+
+
+Implements the Extension ability context. This module is inherited from **Context**.
+
+
+## Attributes
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+| Name| Type| Readable| Writable| Description| 
+| -------- | -------- | -------- | -------- | -------- |
+| currentHapModuleInfo | HapModuleInfo | Yes| No| Information about the current HAP file. | 
diff --git a/en/application-dev/reference/apis/js-apis-extensionAbilityInfo.md b/en/application-dev/reference/apis/js-apis-extensionAbilityInfo.md
new file mode 100644
index 0000000000000000000000000000000000000000..abee12afeee1aebc4fc898217719b50924a29fb4
--- /dev/null
+++ b/en/application-dev/reference/apis/js-apis-extensionAbilityInfo.md
@@ -0,0 +1,28 @@
+# ExtensionAbilityInfo
+
+> **NOTE**<br/>
+>
+> The initial APIs of this module are supported since API version 9. API version 9 is a canary version for trial use. The APIs of this version may be unstable.
+
+## AbilityInfo
+
+Provides the ability information.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+| Name                   | Type                   | Readable  | Writable  | Description                      |
+| --------------------- | --------------------- | ---- | ---- | ------------------------ |
+| bundleName            | string                | Yes   | No   | Bundle name of the application.                    |
+| moduleName            | string                | Yes   | No   | Name of the HAP file to which the ability belongs.       |
+| name                  | string                | Yes   | No   | Ability name.               |
+| labelId               | number                | Yes   | No   | Ability label ID.            |
+| descriptionId         | number                | Yes   | No   | Ability description ID.            |
+| iconId                | number                | Yes   | No   | Ability icon ID.            |
+| isVisible             | boolean               | Yes   | No   | Whether the ability can be called by other applications.    |
+| extensionAbilityType  | bundle.ExtensionAbilityType | Yes  | No  | Type of the Extension ability.     |
+| permissions           | Array\<string>        | Yes   | No   | Permissions required for other applications to call the ability.|
+| applicationInfo       | ApplicationInfo       | Yes   | No   | Application configuration information.               |
+| metaData              | Array\<Metadata>      | Yes   | No   | Metadata of the ability.             |
+| enabled               | boolean               | Yes   | No   | Whether the ability is enabled.             |
+| readPermission        | string                | Yes   | No   | Permission required for reading the ability data.        |
+| writePermission       | string                | Yes   | No   | Permission required for writing data to the ability.        |
diff --git a/en/application-dev/reference/apis/js-apis-serviceExtAbilityContext.md b/en/application-dev/reference/apis/js-apis-serviceExtAbilityContext.md
new file mode 100644
index 0000000000000000000000000000000000000000..2647c44803988d63acf8d9f80d9f402033e60207
--- /dev/null
+++ b/en/application-dev/reference/apis/js-apis-serviceExtAbilityContext.md
@@ -0,0 +1,414 @@
+# ServiceExtAbilityContext
+
+
+> **NOTE**<br/>
+>
+> The initial APIs of this module are supported since API version 9. API version 9 is a canary version for trial use. The APIs of this version may be unstable.
+
+
+## Attributes
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+| Name| Type| Readable| Writable| Description| 
+| -------- | -------- | -------- | -------- | -------- |
+| extensionAbilityInfo | ExtensionAbilityInfo | Yes| No| Extension ability information. | 
+
+
+## startAbility
+
+startAbility(want: Want, callback: AsyncCallback&lt;void&gt;): void
+
+Starts an ability. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want)| Yes| Information about the **Want** used for starting an ability.| 
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.| 
+
+**Example**
+
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+};
+this.context.startAbility(want, (error) => {
+    console.log("error.code = " + error.code)
+})
+```
+
+## startAbility
+
+startAbility(want: Want, options: StartOptions, callback: AsyncCallback&lt;void&gt;): void
+
+Starts an ability with **options** specified. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want) | Yes| Information about the **Want** used for starting an ability.| 
+| options | StartOptions | Yes| Parameters used for starting the ability.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.| 
+
+**Example**
+    
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+};
+var options = {
+  windowMode: 0,
+};
+this.context.startAbility(want, options, (error) => {
+    console.log("error.code = " + error.code)
+})
+```
+
+
+## startAbility
+
+startAbility(want: Want, options: StartOptions): Promise&lt;void&gt;
+
+Starts an ability with **options** specified. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want)| Yes| Information about the **Want** used for starting an ability.| 
+| options | StartOptions | Yes| Parameters used for starting the ability.|
+
+**Return value**
+
+| Type| Description| 
+| -------- | -------- |
+| Promise&lt;void&gt; | Promise used to return the result.| 
+
+**Example**
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+};
+var options = {
+  windowMode: 0,
+};
+this.context.startAbility(want, options)
+.then((data) => {
+    console.log('Operation successful.')
+}).catch((error) => {
+    console.log('Operation failed.');
+})
+```
+
+## startAbilityWithAccount
+
+startAbilityWithAccount(want: Want, accountId: number, callback: AsyncCallback\<void>): void
+
+Starts an ability based on an account. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want)| Yes| Information about the **Want** used for starting an ability.| 
+| accountId | number                   | Yes| Account ID.                  | 
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.| 
+
+**Example**
+
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+};
+var accountId = 11;
+this.context.startAbility(want, accountId, (error) => {
+    console.log("error.code = " + error.code)
+})
+```
+
+## startAbilityWithAccount
+
+startAbilityWithAccount(want: Want, accountId: number, options: StartOptions, callback: AsyncCallback\<void>): void
+
+Starts an ability based on an account and **options**. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want) | Yes| Information about the **Want** used for starting an ability.| 
+| accountId | number                   | Yes| Account ID.                  | 
+| options | StartOptions | Yes| Parameters used for starting the ability.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.| 
+
+**Example**
+    
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+};
+var options = {
+  windowMode: 0,
+};
+var accountId = 11;
+this.context.startAbility(want, accountId, options, (error) => {
+    console.log("error.code = " + error.code)
+})
+```
+
+
+## startAbilityWithAccount
+
+startAbilityWithAccount(want: Want, accountId: number, options?: StartOptions): Promise\<void>
+
+Starts an ability based on an account and **options**. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want)| Yes| Information about the **Want** used for starting an ability.| 
+| accountId | number                   | Yes| Account ID.                  |
+| options | StartOptions | No| Parameters used for starting the ability.|
+
+**Return value**
+
+| Type| Description| 
+| -------- | -------- |
+| Promise&lt;void&gt; | Promise used to return the result.| 
+
+**Example**
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+};
+var options = {
+  windowMode: 0,
+};
+var accountId = 11;
+this.context.startAbility(want, accountId, options)
+.then((data) => {
+    console.log('Operation successful.')
+}).catch((error) => {
+    console.log('Operation failed.');
+})
+```
+
+## terminateSelf
+
+terminateSelf(callback: AsyncCallback&lt;void&gt;): void
+
+Terminates this ability. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.| 
+
+**Example**
+
+```js
+this.context.terminateSelf((err) => {
+    console.log('terminateSelf result:' + JSON.stringfy(err));
+});
+```
+
+## terminateSelf
+
+terminateSelf(): Promise&lt;void&gt;
+
+Terminates this ability. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Return value**
+
+| Type| Description| 
+| -------- | -------- |
+| Promise&lt;void&gt; | Promise used to return the result.| 
+
+**Example**
+
+```js
+this.context.terminateSelf(want).then((data) => {
+    console.log('success:' + JSON.stringfy(data));
+}).catch((error) => {
+    console.log('failed:' + JSON.stringfy(error));
+});
+```
+
+
+## connectAbility
+
+connectAbility(want: Want, options: ConnectOptions): number
+
+Uses the **AbilityInfo.AbilityType.SERVICE** template to connect this ability to another ability.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want)| Yes| Information about the **Want** used for starting an ability.|
+| options | ConnectOptions | Yes| Connection channel.|
+
+**Return value**
+
+| Type| Description| 
+| -------- | -------- |
+| number | ID of the connection between the two abilities.|
+
+**Example**
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+}
+var options = {
+  onConnect: (elementName, remote) => {
+    console.log('connectAbility onConnect, elementName: ' + elementName + ', remote: ' remote)
+  },
+  onDisconnect: (elementName) => {
+    console.log('connectAbility onDisconnect, elementName: ' + elementName)
+  },
+  onFailed: (code) => {
+    console.log('connectAbility onFailed, code: ' + code)
+  }
+}
+this.context.connectAbility(want, options) {
+  console.log('code: ' + code)
+}
+```
+
+## connectAbilityWithAccount
+
+connectAbilityWithAccount(want: Want, accountId: number, options: ConnectOptions): number
+
+Uses the **AbilityInfo.AbilityType.SERVICE** template to connect this ability to another ability based on an account.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| want | [Want](js-apis-featureAbility.md#want)| Yes| Information about the **Want** used for starting an ability.|
+| accountId | number | Yes| Account ID.|
+| options | ConnectOptions | Yes| Connection channel.|
+
+**Return value**
+
+| Type| Description| 
+| -------- | -------- |
+| number | ID of the connection between the two abilities.|
+
+**Example**
+```js
+var want = {
+  "deviceId": "",
+  "bundleName": "com.extreme.test",
+  "abilityName": "com.extreme.test.MainAbility"
+}
+var accountId = 111;
+var options = {
+  onConnect: (elementName, remote) => {
+    console.log('connectAbility onConnect, elementName: ' + elementName + ', remote: ' remote)
+  },
+  onDisconnect: (elementName) => {
+    console.log('connectAbility onDisconnect, elementName: ' + elementName)
+  },
+  onFailed: (code) => {
+    console.log('connectAbility onFailed, code: ' + code)
+  }
+}
+this.context.connectAbility(want, accountId, options) {
+  console.log('code: ' + code)
+}
+```
+
+## disconnectAbility
+
+disconnectAbility(connection: number, callback:AsyncCallback<void>): void
+
+Disconnects this ability from another ability. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| connection | number | Yes| ID of the connection to be disconnected.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
+
+**Example**
+
+```js
+var connection = 111;
+this.context.disconnectAbility(connection, () => {
+  console.log('disconnection')
+})
+```
+
+## disconnectAbility
+
+disconnectAbility(connection: number): Promise<void>
+
+Disconnects this ability from another ability. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Ability.AbilityRuntime.Core
+
+**Parameters**
+
+| Name| Type| Mandatory| Description| 
+| -------- | -------- | -------- | -------- |
+| connection | number | Yes| ID of the connection to be disconnected.|
+
+**Return value**
+
+| Type| Description| 
+| -------- | -------- |
+| Promise&lt;void&gt; | Promise used to return the result.| 
+
+**Example**
+
+```js
+var connection = 111;
+this.context.disconnectAbility(connection).then(() => {
+  console.log('disconnected successfully')
+}).catch((err) => {
+  console.log('disconnected failed')
+})
+```