diff --git a/api/application/Context.d.ts b/api/application/Context.d.ts
old mode 100644
new mode 100755
index 3006ab4faf698b032f973b044ce7285784ba57f4..e8678b43276c66040a4184285842bc073b0f1024
--- a/api/application/Context.d.ts
+++ b/api/application/Context.d.ts
@@ -139,4 +139,21 @@ export default class Context extends BaseContext {
      * @StageModelOnly
      */
     getApplicationContext(): Context;
+
+    /**
+     * Switch file area
+     *
+     * @since 9
+     * @sysCap SystemCapability.Ability.AbilityRuntime.Core
+     * @param mode file area.
+     * @StageModelOnly
+     */
+     switchArea(mode: AreaMode): void;
+}
+
+export enum AreaMode {
+    EL1 = 0,
+    EL2 = 1,
+    EL3 = 2,
+    EL4 = 3
 }
\ No newline at end of file