diff --git a/docs/examples/asyncAction.tsx b/docs/examples/asyncAction.tsx
index 5aff04a..c523cf3 100644
--- a/docs/examples/asyncAction.tsx
+++ b/docs/examples/asyncAction.tsx
@@ -4,7 +4,7 @@ import Upload from 'rc-upload';
 
 const props = {
   action: () => {
-    return new Promise(resolve => {
+    return new Promise<string>(resolve => {
       setTimeout(() => {
         resolve('/upload.do');
       }, 2000);
diff --git a/docs/examples/beforeUpload.tsx b/docs/examples/beforeUpload.tsx
index fe78577..cefd775 100644
--- a/docs/examples/beforeUpload.tsx
+++ b/docs/examples/beforeUpload.tsx
@@ -1,10 +1,10 @@
 /* eslint no-console:0 */
 
-import React from 'react';
+import { Action } from '@/interface';
 import Upload from 'rc-upload';
 
 const props = {
-  action: '/upload.do',
+  action: '/upload.do' as Action,
   multiple: true,
   onStart(file) {
     console.log('onStart', file, file.name);
@@ -17,7 +17,7 @@ const props = {
   },
   beforeUpload(file, fileList) {
     console.log(file, fileList);
-    return new Promise(resolve => {
+    return new Promise<string>(resolve => {
       console.log('start check');
       setTimeout(() => {
         console.log('check finshed');
diff --git a/docs/examples/customRequest.tsx b/docs/examples/customRequest.tsx
index 83c13af..afe58fd 100644
--- a/docs/examples/customRequest.tsx
+++ b/docs/examples/customRequest.tsx
@@ -2,6 +2,7 @@
 import React from 'react';
 import axios from 'axios';
 import Upload from 'rc-upload';
+import { UploadRequestOption } from '@/interface';
 
 const uploadProps = {
   action: '/upload.do',
@@ -32,13 +33,13 @@ const uploadProps = {
     onProgress,
     onSuccess,
     withCredentials,
-  }) {
+  }: UploadRequestOption) {
     // EXAMPLE: post form-data with 'axios'
     // eslint-disable-next-line no-undef
     const formData = new FormData();
     if (data) {
       Object.keys(data).forEach(key => {
-        formData.append(key, data[key]);
+        formData.append(key, data[key] as string);
       });
     }
     formData.append(filename, file);
@@ -48,7 +49,7 @@ const uploadProps = {
         withCredentials,
         headers,
         onUploadProgress: ({ total, loaded }) => {
-          onProgress({ percent: Math.round((loaded / total) * 100).toFixed(2) }, file);
+          onProgress({ percent: Number(Math.round((loaded / total) * 100).toFixed(2)) }, file);
         },
       })
       .then(({ data: response }) => {
diff --git a/src/interface.tsx b/src/interface.tsx
index 9d02f27..1c6e1d5 100644
--- a/src/interface.tsx
+++ b/src/interface.tsx
@@ -29,7 +29,7 @@ export interface UploadProps
     file: RcFile,
     FileList: RcFile[],
   ) => BeforeUploadFileType | Promise<void | BeforeUploadFileType> | void;
-  customRequest?: (option: UploadRequestOption) => void;
+  customRequest?: (option: UploadRequestOption) => void | { abort: () => void };
   withCredentials?: boolean;
   openFileDialogOnClick?: boolean;
   prefixCls?: string;
@@ -54,6 +54,8 @@ export type UploadRequestMethod = 'POST' | 'PUT' | 'PATCH' | 'post' | 'put' | 'p
 
 export type UploadRequestHeader = Record<string, string>;
 
+export type UploadRequestFile = Exclude<BeforeUploadFileType, File | boolean> | RcFile;
+
 export interface UploadRequestError extends Error {
   status?: number;
   method?: UploadRequestMethod;
@@ -61,12 +63,12 @@ export interface UploadRequestError extends Error {
 }
 
 export interface UploadRequestOption<T = any> {
-  onProgress?: (event: UploadProgressEvent) => void;
+  onProgress?: (event: UploadProgressEvent, file?: UploadRequestFile) => void;
   onError?: (event: UploadRequestError | ProgressEvent, body?: T) => void;
-  onSuccess?: (body: T, xhr?: XMLHttpRequest) => void;
+  onSuccess?: (body: T, fileOrXhr?: UploadRequestFile | XMLHttpRequest) => void;
   data?: Record<string, unknown>;
   filename?: string;
-  file: Exclude<BeforeUploadFileType, File | boolean> | RcFile;
+  file: UploadRequestFile;
   withCredentials?: boolean;
   action: string;
   headers?: UploadRequestHeader;