diff --git a/api/app/context.d.ts b/api/app/context.d.ts
index cb0b24f6e98b58c52faa5a92f9513e7f3a8ee235..e4babaa2bdb37bc0a7ae72f8e2296f8f262af93a 100644
--- a/api/app/context.d.ts
+++ b/api/app/context.d.ts
@@ -17,6 +17,7 @@ import { AsyncCallback } from '../basic';
 import { ApplicationInfo } from '../bundle/applicationInfo';
 import { ProcessInfo } from './processInfo';
 import { ElementName } from '../bundle/elementName';
+import BaseContext from '../application/BaseContext';
 
 /**
  * The context of an ability or an application.  It allows access to
@@ -29,7 +30,7 @@ import { ElementName } from '../bundle/elementName';
  * @import import abilityManager from 'app/context'
  * @permission N/A
  */
-export interface Context {
+export interface Context extends BaseContext {
 
     /**
     * Get the local root dir of an app. If it is the first call, the dir
diff --git a/api/application/BaseContext.d.ts b/api/application/BaseContext.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9461fdde36a81e7047392f64bbf22de38a374619
--- /dev/null
+++ b/api/application/BaseContext.d.ts
@@ -0,0 +1,33 @@
+/*
+ * 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 base context of 'app.Context' for FA Mode or
+ * 'application.Context' for Stage Mode.
+ *
+ * @since 8
+ * @sysCap AAFwk
+ * @devices phone, tablet, tv, wearable, car
+ * @permission N/A
+ */
+export default interface BaseContext {
+    /**
+     * Indicates the context is FA Mode or Stage Mode.
+     *
+     * @since 8
+     * @sysCap AAFwk
+     */
+    stageMode: boolean;
+}
\ No newline at end of file
diff --git a/api/application/Context.d.ts b/api/application/Context.d.ts
index db1912de8142d57364f82ba16183d882ec91ec3e..ce5fb3d3454d086695929db0f16d2179af6bcfd8 100644
--- a/api/application/Context.d.ts
+++ b/api/application/Context.d.ts
@@ -15,6 +15,7 @@
 
 import { ApplicationInfo } from "../bundle/applicationInfo";
 import resmgr from "../@ohos.resourceManager";
+import BaseContext from "./BaseContext";
 
 /**
  * The base context of an ability or an application. It allows access to
@@ -25,7 +26,7 @@ import resmgr from "../@ohos.resourceManager";
  * @devices phone, tablet, tv, wearable, car
  * @permission N/A
  */
-export default class Context {
+export default class Context extends BaseContext {
     /**
      * Indicates the capability of accessing application resources.
      *