diff --git a/api/@ohos.resourceManager.d.ts b/api/@ohos.resourceManager.d.ts
index 1ac9bab934005119d392473558078dbec9263d9e..6218f042a8f773ef5765b6d3e6c352bca9997ea3 100644
--- a/api/@ohos.resourceManager.d.ts
+++ b/api/@ohos.resourceManager.d.ts
@@ -358,6 +358,23 @@ 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;
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