diff --git a/src/adapter.ts b/src/adapter.ts
index 502441d..696271f 100644
--- a/src/adapter.ts
+++ b/src/adapter.ts
@@ -11,8 +11,14 @@ import {
   AxiosRequestHeaders,
 } from './core/Axios';
 
+/**
+ * 适配器请求类型
+ */
 export type AxiosAdapterRequestType = 'request' | 'download' | 'upload';
 
+/**
+ * 适配器请求方法
+ */
 export type AxiosAdapterRequestMethod =
   | 'OPTIONS'
   | 'GET'
@@ -24,8 +30,19 @@ export type AxiosAdapterRequestMethod =
   | 'TRACE'
   | 'CONNECT';
 
+/**
+ * 适配器请求数据
+ */
+export type AxiosAdapterRequestData = string | AnyObject | ArrayBuffer;
+
+/**
+ * 适配器响应数据
+ */
 export type AxiosAdapterResponseData = string | ArrayBuffer | AnyObject;
 
+/**
+ * 适配器响应体
+ */
 export interface AxiosAdapterResponse extends AnyObject {
   /**
    * 状态码
@@ -45,6 +62,9 @@ export interface AxiosAdapterResponse extends AnyObject {
   data: AxiosAdapterResponseData;
 }
 
+/**
+ * 适配器错误体
+ */
 export interface AxiosAdapterResponseError extends AnyObject {
   /**
    * 状态码
@@ -64,6 +84,9 @@ export interface AxiosAdapterResponseError extends AnyObject {
   data?: AnyObject;
 }
 
+/**
+ * 适配器请求配置
+ */
 export interface AxiosAdapterRequestConfig extends AnyObject {
   /**
    * 请求类型
@@ -84,7 +107,7 @@ export interface AxiosAdapterRequestConfig extends AnyObject {
   /**
    * 请求数据
    */
-  data?: AnyObject;
+  data?: AxiosAdapterRequestData;
   /**
    * 请求头
    */
@@ -111,14 +134,30 @@ export interface AxiosAdapterRequestConfig extends AnyObject {
   fail(error: AxiosAdapterResponseError): void;
 }
 
+/**
+ * 请求函数基本选项
+ */
 export interface AxiosAdapterBaseOptions extends AxiosAdapterRequestConfig {
   header?: AxiosRequestHeaders;
   success(response: AxiosAdapterResponse): void;
   fail(error: AxiosAdapterResponseError): void;
 }
 
+/**
+ * 请求函数选项
+ */
 export type AxiosAdapterRequestOptions = AxiosAdapterBaseOptions;
 
+/**
+ * 下载函数选项
+ */
+export interface AxiosAdapterDownloadOptions extends AxiosAdapterBaseOptions {
+  filePath?: string;
+}
+
+/**
+ * 上传函数选项
+ */
 export interface AxiosAdapterUploadOptions
   extends AxiosAdapterBaseOptions,
     AxiosRequestFormData {
@@ -126,22 +165,30 @@ export interface AxiosAdapterUploadOptions
   formData?: AnyObject;
 }
 
-export interface AxiosAdapterDownloadOptions extends AxiosAdapterBaseOptions {
-  filePath?: string;
-}
-
+/**
+ * 请求函数
+ */
 export interface AxiosAdapterRequest {
-  (config: AxiosAdapterRequestOptions): AxiosAdapterTask;
-}
-
-export interface AxiosAdapterUpload {
-  (config: AxiosAdapterUploadOptions): AxiosAdapterTask;
+  (config: AxiosAdapterRequestOptions): AxiosAdapterPlatformTask;
 }
 
+/**
+ * 下载函数
+ */
 export interface AxiosAdapterDownload {
-  (config: AxiosAdapterDownloadOptions): AxiosAdapterTask;
+  (config: AxiosAdapterDownloadOptions): AxiosAdapterPlatformTask;
 }
 
+/**
+ * 上传函数
+ */
+export interface AxiosAdapterUpload {
+  (config: AxiosAdapterUploadOptions): AxiosAdapterPlatformTask;
+}
+
+/**
+ * 适配器平台
+ */
 export interface AxiosAdapterPlatform {
   /**
    * 发送请求
@@ -157,7 +204,10 @@ export interface AxiosAdapterPlatform {
   upload: AxiosAdapterUpload;
 }
 
-export type AxiosAdapterTask =
+/**
+ * 适配器平台请求任务
+ */
+export type AxiosAdapterPlatformTask =
   | undefined
   | void
   | {
@@ -166,10 +216,16 @@ export type AxiosAdapterTask =
       offProgressUpdate?(callback: AxiosProgressCallback): void;
     };
 
+/**
+ * 适配器函数
+ */
 export interface AxiosAdapter {
-  (config: AxiosAdapterRequestConfig): AxiosAdapterTask;
+  (config: AxiosAdapterRequestConfig): AxiosAdapterPlatformTask;
 }
 
+/**
+ * 获取支持的平台适配器
+ */
 export function getDefaultAdapter() {
   const platform = revisePlatformApiNames(getPlatform());
 
@@ -220,13 +276,20 @@ export function getDefaultAdapter() {
   return createAdapter(platform);
 }
 
+/**
+ * 创建适配器
+ *
+ * @param platform 平台 API 对象
+ */
 export function createAdapter(platform: AxiosAdapterPlatform) {
   assert(isPlainObject(platform), 'platform 不是一个 object');
   assert(isFunction(platform.request), 'request 不是一个 function');
   assert(isFunction(platform.upload), 'upload 不是一个 function');
   assert(isFunction(platform.download), 'download 不是一个 function');
 
-  function adapter(config: AxiosAdapterRequestConfig): AxiosAdapterTask {
+  function adapter(
+    config: AxiosAdapterRequestConfig,
+  ): AxiosAdapterPlatformTask {
     const baseOptions = transformOptions(config);
 
     switch (config.type) {
@@ -242,14 +305,14 @@ export function createAdapter(platform: AxiosAdapterPlatform) {
   function processRequest(
     request: AxiosAdapterRequest,
     baseOptions: AxiosAdapterBaseOptions,
-  ): AxiosAdapterTask {
+  ): AxiosAdapterPlatformTask {
     return request(baseOptions);
   }
 
   function processUpload(
     upload: AxiosAdapterUpload,
     baseOptions: AxiosAdapterBaseOptions,
-  ): AxiosAdapterTask {
+  ): AxiosAdapterPlatformTask {
     const { name, filePath, fileType, ...formData } =
       baseOptions.data as AxiosRequestFormData;
     const options = {
@@ -273,7 +336,7 @@ export function createAdapter(platform: AxiosAdapterPlatform) {
   function processDownload(
     download: AxiosAdapterDownload,
     baseOptions: AxiosAdapterBaseOptions,
-  ): AxiosAdapterTask {
+  ): AxiosAdapterPlatformTask {
     const options: AxiosAdapterDownloadOptions = {
       ...baseOptions,
       filePath: baseOptions.params?.filePath,
diff --git a/src/axios.ts b/src/axios.ts
index 3c0a74b..a5895a3 100644
--- a/src/axios.ts
+++ b/src/axios.ts
@@ -10,6 +10,9 @@ import { mergeConfig } from './core/mergeConfig';
 import { createAdapter } from './adapter';
 import defaults from './defaults';
 
+/**
+ * axios 实例默认配置
+ */
 export interface AxiosInstanceDefaults extends AxiosRequestConfig {
   /**
    * 请求头
@@ -17,6 +20,9 @@ export interface AxiosInstanceDefaults extends AxiosRequestConfig {
   headers: Required<AxiosRequestHeaders>;
 }
 
+/**
+ * axios 实例
+ */
 export interface AxiosInstance extends AxiosDomainRequest, Axios {
   /**
    * 默认请求配置
@@ -24,6 +30,9 @@ export interface AxiosInstance extends AxiosDomainRequest, Axios {
   defaults: AxiosInstanceDefaults;
 }
 
+/**
+ * axios 静态对象
+ */
 export interface AxiosStatic extends AxiosInstance {
   /**
    * Axios 类
@@ -44,11 +53,11 @@ export interface AxiosStatic extends AxiosInstance {
    */
   createAdapter: typeof createAdapter;
   /**
-   * 判断 Cancel
+   * 传入取消请求错误返回 true
    */
   isCancel: typeof isCancel;
   /**
-   * 判断 AxiosError
+   * 传入响应错误返回 true
    */
   isAxiosError: typeof isAxiosError;
 }
diff --git a/src/core/Axios.ts b/src/core/Axios.ts
index 4ef61c6..7f90882 100644
--- a/src/core/Axios.ts
+++ b/src/core/Axios.ts
@@ -5,7 +5,7 @@ import { isFunction, isPromise, isString } from '../helpers/isTypes';
 import {
   AxiosAdapter,
   AxiosAdapterRequestMethod,
-  AxiosAdapterTask,
+  AxiosAdapterPlatformTask,
   AxiosAdapterRequestConfig,
   AxiosAdapterResponseData,
 } from '../adapter';
@@ -14,9 +14,11 @@ import { mergeConfig } from './mergeConfig';
 import { CancelToken } from './cancel';
 import { dispatchRequest } from './dispatchRequest';
 import { AxiosTransformer } from './transformData';
-
 import AxiosDomain from './AxiosDomain';
 
+/**
+ * 请求方法
+ */
 export type AxiosRequestMethod =
   | AxiosAdapterRequestMethod
   | 'options'
@@ -29,6 +31,9 @@ export type AxiosRequestMethod =
   | 'trace'
   | 'connect';
 
+/**
+ * 请求头
+ */
 export interface AxiosRequestHeaders extends AnyObject {
   /**
    * 通用请求头
@@ -68,6 +73,9 @@ export interface AxiosRequestHeaders extends AnyObject {
   connect?: AnyObject;
 }
 
+/**
+ * 表单数据（上传会用到）
+ */
 export interface AxiosRequestFormData extends AnyObject {
   /**
    * 文件名
@@ -79,10 +87,23 @@ export interface AxiosRequestFormData extends AnyObject {
   filePath: string;
 }
 
-export type AxiosRequestData = AnyObject | AxiosRequestFormData;
+/**
+ * 请求数据
+ */
+export type AxiosRequestData =
+  | string
+  | AnyObject
+  | ArrayBuffer
+  | AxiosRequestFormData;
 
+/**
+ * 响应数据
+ */
 export type AxiosResponseData = undefined | number | AxiosAdapterResponseData;
 
+/**
+ * 监听进度回调事件对象
+ */
 export interface AxiosProgressEvent {
   /**
    * 下载进度
@@ -98,10 +119,21 @@ export interface AxiosProgressEvent {
   totalBytesExpectedToSend: number;
 }
 
+/**
+ * 监听进度回调
+ */
 export interface AxiosProgressCallback {
-  (event: AxiosProgressEvent): void;
+  (
+    /**
+     * 事件对象
+     */
+    event: AxiosProgressEvent,
+  ): void;
 }
 
+/**
+ * 请求配置
+ */
 export interface AxiosRequestConfig
   extends Partial<
     Omit<AxiosAdapterRequestConfig, 'type' | 'success' | 'fail'>
@@ -176,6 +208,9 @@ export interface AxiosRequestConfig
   validateStatus?: (status: number) => boolean;
 }
 
+/**
+ * 响应体
+ */
 export interface AxiosResponse<
   TData extends AxiosResponseData = AxiosResponseData,
 > extends AnyObject {
@@ -202,9 +237,12 @@ export interface AxiosResponse<
   /**
    * 请求任务
    */
-  request?: AxiosAdapterTask;
+  request?: AxiosAdapterPlatformTask;
 }
 
+/**
+ * 错误体
+ */
 export interface AxiosResponseError extends AnyObject {
   /**
    * 状态码
@@ -233,9 +271,12 @@ export interface AxiosResponseError extends AnyObject {
   /**
    * 请求任务
    */
-  request?: AxiosAdapterTask;
+  request?: AxiosAdapterPlatformTask;
 }
 
+/**
+ * Axios 构造函数
+ */
 export interface AxiosConstructor {
   new (config: AxiosRequestConfig): Axios;
 }
diff --git a/src/core/AxiosDomain.ts b/src/core/AxiosDomain.ts
index 725bb6d..87b1b99 100644
--- a/src/core/AxiosDomain.ts
+++ b/src/core/AxiosDomain.ts
@@ -8,71 +8,48 @@ import {
   AxiosResponseData,
 } from './Axios';
 
+/**
+ * 请求函数
+ */
 export interface AxiosDomainRequest {
+  <TData extends AxiosResponseData>(config: AxiosRequestConfig): Promise<
+    AxiosResponse<TData>
+  >;
   <TData extends AxiosResponseData>(
-    /**
-     * 请求配置
-     */
-    config: AxiosRequestConfig,
-  ): Promise<AxiosResponse<TData>>;
-  <TData extends AxiosResponseData>(
-    /**
-     * 请求地址
-     */
     url: string,
-    /**
-     * 请求配置
-     */
     config?: AxiosRequestConfig,
   ): Promise<AxiosResponse<TData>>;
 }
 
-export interface AxiosDomainRequestMethod {
-  <TData extends AxiosResponseData>(
-    /**
-     * 请求地址
-     */
-    url: string,
-    /**
-     * 请求配置
-     */
-    config?: AxiosRequestConfig,
-  ): Promise<AxiosResponse<TData>>;
-}
+/**
+ * 普通的请求方法
+ */
+export type AxiosDomainRequestMethod = <TData extends AxiosResponseData>(
+  url: string,
+  config?: AxiosRequestConfig,
+) => Promise<AxiosResponse<TData>>;
 
-export interface AxiosDomainRequestMethodWithParams {
-  <TData extends AxiosResponseData>(
-    /**
-     * 请求地址
-     */
-    url: string,
-    /**
-     * 请求参数
-     */
-    params?: AnyObject,
-    /**
-     * 请求配置
-     */
-    config?: AxiosRequestConfig,
-  ): Promise<AxiosResponse<TData>>;
-}
+/**
+ * 带参数的请求方法
+ */
+export type AxiosDomainRequestMethodWithParams = <
+  TData extends AxiosResponseData,
+>(
+  url: string,
+  params?: AnyObject,
+  config?: AxiosRequestConfig,
+) => Promise<AxiosResponse<TData>>;
 
-export interface AxiosDomainRequestMethodWithData {
-  <TData extends AxiosResponseData>(
-    /**
-     * 请求地址
-     */
-    url: string,
-    /**
-     * 请求数据
-     */
-    data?: AxiosRequestData,
-    /**
-     * 请求配置
-     */
-    config?: AxiosRequestConfig,
-  ): Promise<AxiosResponse<TData>>;
-}
+/**
+ * 带数据的请求方法
+ */
+export type AxiosDomainRequestMethodWithData = <
+  TData extends AxiosResponseData,
+>(
+  url: string,
+  data?: AxiosRequestData,
+  config?: AxiosRequestConfig,
+) => Promise<AxiosResponse<TData>>;
 
 /**
  * 普通的请求方法名称
@@ -187,7 +164,7 @@ for (const method of requestMethodWithParamsNames) {
     config = {},
   ) {
     config.method = method;
-    config.params = config.params ? deepMerge(params, config.params) : params;
+    config.params = deepMerge(params, config.params ?? {});
     return this.request(url, config);
   };
 }
@@ -195,11 +172,11 @@ for (const method of requestMethodWithParamsNames) {
 for (const method of requestMethodWithDataNames) {
   AxiosDomain.prototype[method] = function processRequestMethodWithData(
     url,
-    data = {},
+    data,
     config = {},
   ) {
     config.method = method;
-    config.data = config.data ? deepMerge(data, config.data) : data;
+    config.data = data;
     return this.request(url, config);
   };
 }
diff --git a/src/core/cancel.ts b/src/core/cancel.ts
index 98c0475..bfd81c3 100644
--- a/src/core/cancel.ts
+++ b/src/core/cancel.ts
@@ -1,19 +1,12 @@
 export interface CancelAction {
-  (
-    /**
-     * 取消信息
-     */
-    message?: string,
-  ): void;
+  /**
+   * 取消信息
+   */
+  (message?: string): void;
 }
 
 export interface CancelExecutor {
-  (
-    /**
-     * 取消函数
-     */
-    cancel: CancelAction,
-  ): void;
+  (cancel: CancelAction): void;
 }
 
 export interface CancelTokenSource {
diff --git a/src/core/createError.ts b/src/core/createError.ts
index 09d1fe7..d965d4c 100644
--- a/src/core/createError.ts
+++ b/src/core/createError.ts
@@ -1,19 +1,19 @@
 import { cleanStack } from '../helpers/error';
-import { AxiosAdapterTask } from '../adapter';
+import { AxiosAdapterPlatformTask } from '../adapter';
 import { AxiosRequestConfig, AxiosResponse, AxiosResponseError } from './Axios';
 
 export type AxiosErrorResponse = AxiosResponse | AxiosResponseError;
 
 class AxiosError extends Error {
   config: AxiosRequestConfig;
-  request: AxiosAdapterTask;
+  request: AxiosAdapterPlatformTask;
   response: AxiosErrorResponse;
 
   constructor(
     message: string,
     config: AxiosRequestConfig,
     response: AxiosErrorResponse,
-    request: AxiosAdapterTask,
+    request: AxiosAdapterPlatformTask,
   ) {
     super(message);
 
@@ -29,7 +29,7 @@ export function createError(
   message: string,
   config: AxiosRequestConfig,
   response: AxiosErrorResponse,
-  request: AxiosAdapterTask,
+  request: AxiosAdapterPlatformTask,
 ) {
   const axiosError = new AxiosError(message, config, response, request);
   cleanStack(axiosError);
diff --git a/src/core/dispatchRequest.ts b/src/core/dispatchRequest.ts
index 44f38b6..8ead70c 100644
--- a/src/core/dispatchRequest.ts
+++ b/src/core/dispatchRequest.ts
@@ -9,13 +9,6 @@ import { transformURL } from './transformURL';
 import { AxiosErrorResponse } from './createError';
 import { requestMethodWithDataNames } from './AxiosDomain';
 
-function throwIfCancellationRequested(config: AxiosRequestConfig) {
-  const { cancelToken } = config;
-  if (isCancelToken(cancelToken)) {
-    cancelToken.throwIfRequested();
-  }
-}
-
 /**
  * 可以携带 data 的请求方法
  */
@@ -24,6 +17,13 @@ const requestMethodWithDataRE = new RegExp(
   'i',
 );
 
+/**
+ * 发送请求
+ *
+ * 校验配置，转换配置，转换数据，捕获取消请求。
+ *
+ * @param config 请求配置
+ */
 export function dispatchRequest(config: AxiosRequestConfig) {
   throwIfCancellationRequested(config);
 
@@ -67,3 +67,10 @@ export function dispatchRequest(config: AxiosRequestConfig) {
 
   return request(config).then(onSuccess, onError);
 }
+
+function throwIfCancellationRequested(config: AxiosRequestConfig) {
+  const { cancelToken } = config;
+  if (isCancelToken(cancelToken)) {
+    cancelToken.throwIfRequested();
+  }
+}
diff --git a/src/core/request.ts b/src/core/request.ts
index 8982065..eb4b9b5 100644
--- a/src/core/request.ts
+++ b/src/core/request.ts
@@ -4,7 +4,7 @@ import {
   AxiosAdapterRequestMethod,
   AxiosAdapterResponse,
   AxiosAdapterResponseError,
-  AxiosAdapterTask,
+  AxiosAdapterPlatformTask,
 } from '../adapter';
 import {
   AxiosProgressCallback,
@@ -16,27 +16,13 @@ import { isCancelToken } from './cancel';
 import { AxiosErrorResponse, createError } from './createError';
 import { generateType } from './generateType';
 
-function tryToggleProgressUpdate(
-  adapterConfig: AxiosAdapterRequestConfig,
-  progressUpdate?: (callback: AxiosProgressCallback) => void,
-) {
-  const { onUploadProgress, onDownloadProgress } = adapterConfig;
-  if (isFunction(progressUpdate)) {
-    switch (adapterConfig.type) {
-      case 'upload':
-        if (isFunction(onUploadProgress)) {
-          progressUpdate(onUploadProgress);
-        }
-        break;
-      case 'download':
-        if (isFunction(onDownloadProgress)) {
-          progressUpdate(onDownloadProgress);
-        }
-        break;
-    }
-  }
-}
-
+/**
+ * 开始请求
+ *
+ * 创建适配器配置并调用适配器，监听取消请求，注册监听回调，处理响应体和错误体，抛出异常。
+ *
+ * @param config 请求配置
+ */
 export function request(config: AxiosRequestConfig) {
   return new Promise<AxiosResponse>((resolve, reject) => {
     const { adapter, url, method, cancelToken } = config;
@@ -50,7 +36,7 @@ export function request(config: AxiosRequestConfig) {
       fail,
     };
 
-    let adapterTask: AxiosAdapterTask;
+    let adapterTask: AxiosAdapterPlatformTask;
     try {
       adapterTask = adapter!(adapterConfig);
     } catch (err) {
@@ -60,8 +46,8 @@ export function request(config: AxiosRequestConfig) {
       });
     }
 
-    function success(adapterResponse: AxiosAdapterResponse): void {
-      const response = adapterResponse as AxiosResponse;
+    function success(baseResponse: AxiosAdapterResponse): void {
+      const response = baseResponse as AxiosResponse;
       response.status = response.status ?? 200;
       response.statusText = response.statusText ?? 'OK';
       response.headers = response.headers ?? {};
@@ -75,8 +61,8 @@ export function request(config: AxiosRequestConfig) {
       }
     }
 
-    function fail(adapterResponseError: AxiosAdapterResponseError): void {
-      const responseError = adapterResponseError as AxiosResponseError;
+    function fail(baseResponseError: AxiosAdapterResponseError): void {
+      const responseError = baseResponseError as AxiosResponseError;
       responseError.isFail = true;
       responseError.status = responseError.status ?? 400;
       responseError.statusText = responseError.statusText ?? 'Fail Adapter';
@@ -111,3 +97,24 @@ export function request(config: AxiosRequestConfig) {
     }
   });
 }
+
+function tryToggleProgressUpdate(
+  adapterConfig: AxiosAdapterRequestConfig,
+  progressUpdate?: (callback: AxiosProgressCallback) => void,
+) {
+  const { onUploadProgress, onDownloadProgress } = adapterConfig;
+  if (isFunction(progressUpdate)) {
+    switch (adapterConfig.type) {
+      case 'upload':
+        if (isFunction(onUploadProgress)) {
+          progressUpdate(onUploadProgress);
+        }
+        break;
+      case 'download':
+        if (isFunction(onDownloadProgress)) {
+          progressUpdate(onDownloadProgress);
+        }
+        break;
+    }
+  }
+}
diff --git a/src/core/transformURL.ts b/src/core/transformURL.ts
index a28c7f3..a0e1c8d 100644
--- a/src/core/transformURL.ts
+++ b/src/core/transformURL.ts
@@ -1,3 +1,4 @@
+import { isPlainObject } from '../helpers/isTypes';
 import { buildURL } from '../helpers/buildURL';
 import { combineURL } from '../helpers/combineURL';
 import { dynamicURL } from '../helpers/dynamicURL';
@@ -8,7 +9,11 @@ export function transformURL(config: AxiosRequestConfig) {
   let url = config.url ?? '';
 
   if (!isAbsoluteURL(url)) url = combineURL(config.baseURL ?? '', url);
-  url = dynamicURL(url, config.params, config.data);
+  url = dynamicURL(
+    url,
+    config.params,
+    isPlainObject(config.data) ? config.data : {},
+  );
   url = buildURL(url, config.params, config.paramsSerializer);
 
   return url;
diff --git a/src/index.ts b/src/index.ts
index b2aa77b..8e8ef07 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -19,14 +19,14 @@ export type {
   AxiosAdapterResponse,
   AxiosAdapterResponseData,
   AxiosAdapterResponseError,
-  AxiosAdapterPlatform,
   AxiosAdapterRequest,
   AxiosAdapterRequestOptions,
   AxiosAdapterDownload,
   AxiosAdapterDownloadOptions,
   AxiosAdapterUpload,
   AxiosAdapterUploadOptions,
-  AxiosAdapterTask,
+  AxiosAdapterPlatform,
+  AxiosAdapterPlatformTask,
 } from './adapter';
 export type {
   AxiosInstanceDefaults,
diff --git a/test/core/AxiosDomain.test.ts b/test/core/AxiosDomain.test.ts
index a55b0d8..5696bbb 100644
--- a/test/core/AxiosDomain.test.ts
+++ b/test/core/AxiosDomain.test.ts
@@ -196,33 +196,20 @@ describe('src/core/AxiosDomain.ts', () => {
     requestMethodWithParamsNames.forEach((k) => a[k]('test', p, c));
   });
 
-  test('应该支持深度合并 data', () => {
+  test('应该只取传入的 data', () => {
     const ds = {
       baseURL: 'http://api.com',
     };
     const d = {
-      v1: 1,
-      v2: {
-        v1: 1,
-      },
+      v: 1,
     };
     const c = {
-      data: {
-        v2: {
-          v2: 2,
-        },
-        v3: 3,
-      },
+      v: 2,
     };
 
     const a = new AxiosDomain(ds, async (config) => {
       expect(config.data).toEqual({
-        v1: 1,
-        v2: {
-          v1: 1,
-          v2: 2,
-        },
-        v3: 3,
+        v: 1,
       });
 
       return {} as AxiosResponse;
@@ -230,4 +217,36 @@ describe('src/core/AxiosDomain.ts', () => {
 
     requestMethodWithDataNames.forEach((k) => a[k]('test', d, c));
   });
+
+  test('应该支持多种类型 data', () => {
+    const ds = {
+      baseURL: 'http://api.com',
+    };
+
+    const str = '11';
+    const obj = {};
+    const buff = new ArrayBuffer(0);
+
+    const testStr = new AxiosDomain(ds, async (config) => {
+      expect(config.data).toBe(str);
+
+      return {} as AxiosResponse;
+    });
+    const testObj = new AxiosDomain(ds, async (config) => {
+      expect(config.data).toBe(obj);
+
+      return {} as AxiosResponse;
+    });
+    const testBuff = new AxiosDomain(ds, async (config) => {
+      expect(config.data).toBe(buff);
+
+      return {} as AxiosResponse;
+    });
+
+    requestMethodWithDataNames.forEach((k) => {
+      testStr[k]('test', str);
+      testObj[k]('test', obj);
+      testBuff[k]('test', buff);
+    });
+  });
 });
diff --git a/test/core/cancel.test.ts b/test/core/cancel.test.ts
index 2b45d2c..21fd554 100644
--- a/test/core/cancel.test.ts
+++ b/test/core/cancel.test.ts
@@ -7,7 +7,13 @@ import {
   asyncTimeout,
 } from 'scripts/test.utils';
 import axios from 'src/axios';
-import { Cancel, isCancel, CancelToken, isCancelToken } from '@/core/cancel';
+import {
+  Cancel,
+  isCancel,
+  CancelToken,
+  isCancelToken,
+  CancelAction,
+} from '@/core/cancel';
 
 describe('src/helpers/cancel.ts', () => {
   test('应该支持空参数', () => {
@@ -31,7 +37,7 @@ describe('src/helpers/cancel.ts', () => {
   });
 
   test('应该可以取消', () => {
-    let ca!: () => void;
+    let ca!: CancelAction;
     const ct = new CancelToken((a) => (ca = a));
 
     expect(ct.throwIfRequested()).toBeUndefined();