diff --git a/src/axios.ts b/src/axios.ts
index bd53681..2984da4 100644
--- a/src/axios.ts
+++ b/src/axios.ts
@@ -1,12 +1,16 @@
+import {
+  CancelToken,
+  CancelTokenConstructor,
+  isCancel,
+} from './request/cancel';
+import { isAxiosError } from './request/createError';
+import { mergeConfig } from './core/mergeConfig';
 import { AxiosDomainRequest } from './core/AxiosDomain';
 import Axios, {
   AxiosConstructor,
   AxiosRequestConfig,
   AxiosRequestHeaders,
 } from './core/Axios';
-import { CancelToken, CancelTokenConstructor, isCancel } from './core/cancel';
-import { isAxiosError } from './core/createError';
-import { mergeConfig } from './core/mergeConfig';
 import { createAdapter } from './adapter';
 import defaults from './defaults';
 import { version } from './version';
diff --git a/src/core/Axios.ts b/src/core/Axios.ts
index f5d3a5d..65a5352 100644
--- a/src/core/Axios.ts
+++ b/src/core/Axios.ts
@@ -2,6 +2,9 @@ import { buildURL } from '../helpers/buildURL';
 import { isAbsoluteURL } from '../helpers/isAbsoluteURL';
 import { combineURL } from '../helpers/combineURL';
 import { isString } from '../helpers/isTypes';
+import { CancelToken } from '../request/cancel';
+import { dispatchRequest } from '../request/dispatchRequest';
+import { AxiosTransformer } from '../request/transformData';
 import {
   AxiosAdapter,
   AxiosAdapterRequestMethod,
@@ -11,9 +14,6 @@ import {
 } from '../adapter';
 import InterceptorManager, { Interceptor } from './InterceptorManager';
 import { mergeConfig } from './mergeConfig';
-import { CancelToken } from './cancel';
-import { dispatchRequest } from './dispatchRequest';
-import { AxiosTransformer } from './transformData';
 import AxiosDomain from './AxiosDomain';
 
 /**
diff --git a/src/index.ts b/src/index.ts
index b89fd58..1e33c5d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -36,9 +36,9 @@ export type {
   AxiosStatic,
 } from './axios';
 
-export { CancelToken, isCancel } from './core/cancel';
+export { CancelToken, isCancel } from './request/cancel';
+export { isAxiosError } from './request/createError';
 export { default as Axios } from './core/Axios';
-export { isAxiosError } from './core/createError';
 export { createAdapter } from './adapter';
 export { version } from './version';
 
diff --git a/src/core/cancel.ts b/src/request/cancel.ts
similarity index 100%
rename from src/core/cancel.ts
rename to src/request/cancel.ts
diff --git a/src/core/createError.ts b/src/request/createError.ts
similarity index 91%
rename from src/core/createError.ts
rename to src/request/createError.ts
index d965d4c..5d51825 100644
--- a/src/core/createError.ts
+++ b/src/request/createError.ts
@@ -1,6 +1,10 @@
 import { cleanStack } from '../helpers/error';
+import {
+  AxiosRequestConfig,
+  AxiosResponse,
+  AxiosResponseError,
+} from '../core/Axios';
 import { AxiosAdapterPlatformTask } from '../adapter';
-import { AxiosRequestConfig, AxiosResponse, AxiosResponseError } from './Axios';
 
 export type AxiosErrorResponse = AxiosResponse | AxiosResponseError;
 
diff --git a/src/core/dispatchRequest.ts b/src/request/dispatchRequest.ts
similarity index 93%
rename from src/core/dispatchRequest.ts
rename to src/request/dispatchRequest.ts
index 650130e..b5a08b0 100644
--- a/src/core/dispatchRequest.ts
+++ b/src/request/dispatchRequest.ts
@@ -1,13 +1,17 @@
 import { isFunction, isString } from '../helpers/isTypes';
 import { assert } from '../helpers/error';
+import { requestMethodWithDataNames } from '../core/AxiosDomain';
+import {
+  AxiosRequestConfig,
+  AxiosRequestMethod,
+  AxiosResponse,
+} from '../core/Axios';
 import { Cancel, isCancel, isCancelToken } from './cancel';
 import { flattenHeaders } from './flattenHeaders';
 import { AxiosTransformer, transformData } from './transformData';
 import { request } from './request';
-import { AxiosRequestConfig, AxiosRequestMethod, AxiosResponse } from './Axios';
 import { transformURL } from './transformURL';
 import { AxiosErrorResponse } from './createError';
-import { requestMethodWithDataNames } from './AxiosDomain';
 
 /**
  * 可以携带 data 的请求方法
diff --git a/src/core/flattenHeaders.ts b/src/request/flattenHeaders.ts
similarity index 88%
rename from src/core/flattenHeaders.ts
rename to src/request/flattenHeaders.ts
index a480236..44880fe 100644
--- a/src/core/flattenHeaders.ts
+++ b/src/request/flattenHeaders.ts
@@ -1,6 +1,6 @@
 import { isPlainObject } from '../helpers/isTypes';
 import { ignore } from '../helpers/ignore';
-import { AxiosRequestConfig, AxiosRequestHeaders } from './Axios';
+import { AxiosRequestConfig, AxiosRequestHeaders } from '../core/Axios';
 
 export function flattenHeaders(
   config: AxiosRequestConfig,
diff --git a/src/core/generateType.ts b/src/request/generateType.ts
similarity index 87%
rename from src/core/generateType.ts
rename to src/request/generateType.ts
index d3f7b28..030d846 100644
--- a/src/core/generateType.ts
+++ b/src/request/generateType.ts
@@ -1,5 +1,5 @@
+import { AxiosRequestConfig } from '../core/Axios';
 import { AxiosAdapterRequestType } from '../adapter';
-import { AxiosRequestConfig } from './Axios';
 
 export function generateType(config: AxiosRequestConfig) {
   let requestType: AxiosAdapterRequestType = 'request';
diff --git a/src/core/request.ts b/src/request/request.ts
similarity index 97%
rename from src/core/request.ts
rename to src/request/request.ts
index 7b922f1..28d1690 100644
--- a/src/core/request.ts
+++ b/src/request/request.ts
@@ -1,4 +1,9 @@
 import { isFunction, isPlainObject } from '../helpers/isTypes';
+import {
+  AxiosRequestConfig,
+  AxiosResponse,
+  AxiosResponseError,
+} from '../core/Axios';
 import {
   AxiosAdapterRequestConfig,
   AxiosAdapterRequestMethod,
@@ -6,7 +11,7 @@ import {
   AxiosAdapterResponseError,
   AxiosAdapterPlatformTask,
 } from '../adapter';
-import { AxiosRequestConfig, AxiosResponse, AxiosResponseError } from './Axios';
+
 import { isCancelToken } from './cancel';
 import { AxiosErrorResponse, createError } from './createError';
 import { generateType } from './generateType';
diff --git a/src/core/transformData.ts b/src/request/transformData.ts
similarity index 100%
rename from src/core/transformData.ts
rename to src/request/transformData.ts
diff --git a/src/core/transformURL.ts b/src/request/transformURL.ts
similarity index 75%
rename from src/core/transformURL.ts
rename to src/request/transformURL.ts
index a0e1c8d..b6f4ab8 100644
--- a/src/core/transformURL.ts
+++ b/src/request/transformURL.ts
@@ -3,17 +3,15 @@ import { buildURL } from '../helpers/buildURL';
 import { combineURL } from '../helpers/combineURL';
 import { dynamicURL } from '../helpers/dynamicURL';
 import { isAbsoluteURL } from '../helpers/isAbsoluteURL';
-import { AxiosRequestConfig } from './Axios';
+import { AxiosRequestConfig } from '../core/Axios';
 
 export function transformURL(config: AxiosRequestConfig) {
   let url = config.url ?? '';
 
   if (!isAbsoluteURL(url)) url = combineURL(config.baseURL ?? '', url);
-  url = dynamicURL(
-    url,
-    config.params,
-    isPlainObject(config.data) ? config.data : {},
-  );
+
+  const data = isPlainObject(config.data) ? config.data : {};
+  url = dynamicURL(url, config.params, data);
   url = buildURL(url, config.params, config.paramsSerializer);
 
   return url;
diff --git a/test/axios.api.test.ts b/test/axios.api.test.ts
index 80196e3..7256c32 100644
--- a/test/axios.api.test.ts
+++ b/test/axios.api.test.ts
@@ -1,11 +1,11 @@
 import { describe, test, expect } from 'vitest';
+import { eachMethods } from 'scripts/test.utils';
+import { CancelToken, isCancel } from '@/request/cancel';
+import { isAxiosError } from '@/request/createError';
 import Axios from '@/core/Axios';
-import { CancelToken, isCancel } from '@/core/cancel';
-import { isAxiosError } from '@/core/createError';
+import defaults from '@/defaults';
 import { createAdapter } from '@/adapter';
 import axios from '@/axios';
-import defaults from '@/defaults';
-import { eachMethods } from 'scripts/test.utils';
 
 describe('src/axios.ts', () => {
   test('应该有这些静态属性', () => {
diff --git a/test/core/mergeConfig.test.ts b/test/core/mergeConfig.test.ts
index ccf4c8b..b3c3423 100644
--- a/test/core/mergeConfig.test.ts
+++ b/test/core/mergeConfig.test.ts
@@ -1,7 +1,7 @@
 import { describe, test, expect, vi } from 'vitest';
 import { ignore } from '@/helpers/ignore';
+import { CancelToken } from '@/request/cancel';
 import { mergeConfig } from '@/core/mergeConfig';
-import { CancelToken } from '@/core/cancel';
 
 describe('src/core/mergeConfig.ts', () => {
   test('应该支持空参数', () => {
diff --git a/test/core/cancel.test.ts b/test/request/cancel.test.ts
similarity index 97%
rename from test/core/cancel.test.ts
rename to test/request/cancel.test.ts
index 21fd554..b123aab 100644
--- a/test/core/cancel.test.ts
+++ b/test/request/cancel.test.ts
@@ -6,16 +6,16 @@ import {
   noop,
   asyncTimeout,
 } from 'scripts/test.utils';
-import axios from 'src/axios';
 import {
   Cancel,
   isCancel,
   CancelToken,
   isCancelToken,
   CancelAction,
-} from '@/core/cancel';
+} from '@/request/cancel';
+import axios from '@/axios';
 
-describe('src/helpers/cancel.ts', () => {
+describe('src/request/cancel.ts', () => {
   test('应该支持空参数', () => {
     const c = new Cancel();
 
diff --git a/test/core/createError.test.ts b/test/request/createError.test.ts
similarity index 89%
rename from test/core/createError.test.ts
rename to test/request/createError.test.ts
index aedfcb4..b9b719e 100644
--- a/test/core/createError.test.ts
+++ b/test/request/createError.test.ts
@@ -1,8 +1,8 @@
 import { describe, test, expect } from 'vitest';
 import { checkStack } from 'scripts/test.utils';
-import { createError, isAxiosError } from '@/core/createError';
+import { createError, isAxiosError } from '@/request/createError';
 
-describe('src/core/createError.ts', () => {
+describe('src/request/createError.ts', () => {
   test('应该支持空参数', () => {
     const c = {};
     const r = {} as any;
diff --git a/test/core/dispatchRequest.test.ts b/test/request/dispatchRequest.test.ts
similarity index 97%
rename from test/core/dispatchRequest.test.ts
rename to test/request/dispatchRequest.test.ts
index f218ade..fc31158 100644
--- a/test/core/dispatchRequest.test.ts
+++ b/test/request/dispatchRequest.test.ts
@@ -1,6 +1,6 @@
 import { describe, test, expect, vi } from 'vitest';
 import { asyncNext, mockAdapter, testEachMethods } from 'scripts/test.utils';
-import { dispatchRequest } from '@/core/dispatchRequest';
+import { dispatchRequest } from '@/request/dispatchRequest';
 import {
   requestMethodNames,
   requestMethodWithDataNames,
@@ -10,7 +10,7 @@ import {
 import axios from '@/axios';
 import _defaults from '@/defaults';
 
-describe('src/core/dispatchRequest.ts', () => {
+describe('src/request/dispatchRequest.ts', () => {
   const defaults = {
     ..._defaults,
     adapter: mockAdapter(),
diff --git a/test/core/flattenHeaders.test.ts b/test/request/flattenHeaders.test.ts
similarity index 94%
rename from test/core/flattenHeaders.test.ts
rename to test/request/flattenHeaders.test.ts
index fcb7e0d..77156c2 100644
--- a/test/core/flattenHeaders.test.ts
+++ b/test/request/flattenHeaders.test.ts
@@ -1,8 +1,8 @@
 import { describe, test, expect } from 'vitest';
-import { flattenHeaders } from '@/core/flattenHeaders';
 import { eachMethods, methods } from 'scripts/test.utils';
+import { flattenHeaders } from '@/request/flattenHeaders';
 
-describe('src/core/flattenHeaders.ts', () => {
+describe('src/request/flattenHeaders.ts', () => {
   const baseHeaders = Object.fromEntries(
     methods.map((k) => [k, { v1: `${k}1`, v2: `${k}2` }]),
   ) as unknown as Record<(typeof methods)[number], AnyObject>;
diff --git a/test/core/generateType.test.ts b/test/request/generateType.test.ts
similarity index 82%
rename from test/core/generateType.test.ts
rename to test/request/generateType.test.ts
index 3d5a171..75d81d2 100644
--- a/test/core/generateType.test.ts
+++ b/test/request/generateType.test.ts
@@ -1,8 +1,8 @@
 import { describe, test, expect } from 'vitest';
-import { generateType } from '@/core/generateType';
 import { testEachMethods } from 'scripts/test.utils';
+import { generateType } from '@/request/generateType';
 
-describe('src/core/generateType.ts', () => {
+describe('src/request/generateType.ts', () => {
   testEachMethods('%s 应该是一个 reuqest', (k) => {
     expect(generateType({ method: k })).toBe('request');
   });
diff --git a/test/core/request.test.ts b/test/request/request.test.ts
similarity index 98%
rename from test/core/request.test.ts
rename to test/request/request.test.ts
index 964cf18..4288b3d 100644
--- a/test/core/request.test.ts
+++ b/test/request/request.test.ts
@@ -7,10 +7,10 @@ import {
   mockAdapterFail,
   testEachMethods,
 } from 'scripts/test.utils';
-import { request } from '@/core/request';
+import { request } from '@/request/request';
 import axios from '@/axios';
 
-describe('src/core/request.ts', () => {
+describe('src/request/request.ts', () => {
   testEachMethods('%s 方法应该返回正确的响应体结构', (k) => {
     const c = {
       adapter: mockAdapter(),
diff --git a/test/core/transformData.test.ts b/test/request/transformData.test.ts
similarity index 90%
rename from test/core/transformData.test.ts
rename to test/request/transformData.test.ts
index 9abceae..e15776a 100644
--- a/test/core/transformData.test.ts
+++ b/test/request/transformData.test.ts
@@ -1,7 +1,7 @@
 import { describe, test, expect } from 'vitest';
-import { transformData } from '@/core/transformData';
+import { transformData } from '@/request/transformData';
 
-describe('src/core/transformData.ts', () => {
+describe('src/request/transformData.ts', () => {
   test('应该支持空配置', () => {
     expect(transformData()).toBeUndefined();
     expect(transformData({})).toEqual({});
diff --git a/test/core/transformURL.test.ts b/test/request/transformURL.test.ts
similarity index 94%
rename from test/core/transformURL.test.ts
rename to test/request/transformURL.test.ts
index 5e09208..3df99c7 100644
--- a/test/core/transformURL.test.ts
+++ b/test/request/transformURL.test.ts
@@ -1,7 +1,7 @@
 import { describe, test, expect } from 'vitest';
-import { transformURL } from '@/core/transformURL';
+import { transformURL } from '@/request/transformURL';
 
-describe('src/core/transformURL.ts', () => {
+describe('src/request/transformURL.ts', () => {
   test('应该支持空配置', () => {
     expect(transformURL({})).toBe('');
     expect(transformURL({ baseURL: 'http://api.com' })).toBe('http://api.com');