diff --git a/api/@ohos.resourceManager.d.ts b/api/@ohos.resourceManager.d.ts
index 3a852691bbfb59f22448a85d0f652a1d5e9630d0..bbe14d1aae31c36319d93eac922bc781d2d97c2c 100644
--- a/api/@ohos.resourceManager.d.ts
+++ b/api/@ohos.resourceManager.d.ts
@@ -351,6 +351,24 @@ export interface ResourceManager {
      * @since 6
      */
     getPluralString(resId: number, num: number): Promise<string>;
+
+    /**
+     * Obtains the raw file resource corresponding to the specified resource path in callback mode.
+     *
+     * @param path Indicates the resource relative path.
+     * @param callback Indicates the asynchronous callback used to return the raw file resource.
+     * @since 8
+     */
+    getRawFile(path: string, callback: AsyncCallback<Uint8Array>);
+
+    /**
+     * Obtains the raw file resource corresponding to the specified resource path in Promise mode.
+     *
+     * @param path Indicates the resource relative path.
+     * @return Returns the raw file resource corresponding to the specified resource path.
+     * @since 8
+     */
+    getRawFile(path: string): Promise<Uint8Array>;
 }
 }
 export default resmgr;
\ No newline at end of file