diff --git a/README.md b/README.md
index c6b28d8..17e2dcb 100644
--- a/README.md
+++ b/README.md
@@ -158,3 +158,9 @@ rpc模式的优点：
 根据Tag生成不同的分组，以类似 **client.user.getUsers()** 这种方式调用。仅在 `classMode=rpc` 场景下生效。
 
 如果没有提供tags，则默认合并到`default`分组
+
+### onDocumentLoaded
+
+类型：`(docs: Document) => Document | void`
+
+加载完openapi文档后的事件，允许直接对文档进行修改
diff --git a/src/bin.ts b/src/bin.ts
index 5e0cf00..ddaa0f7 100755
--- a/src/bin.ts
+++ b/src/bin.ts
@@ -31,7 +31,9 @@ spinner.add({
 spinner.add({
   title: '获取openapi文档',
   task: async (ctx) => {
-    ctx.docs = await Promise.all(ctx.configs.map((config) => pathToOpenapi(config.path)));
+    ctx.docs = await Promise.all(
+      ctx.configs.map((config) => pathToOpenapi(config.path, config.onDocumentLoaded)),
+    );
     await sleep();
   },
 });
diff --git a/src/define-config.ts b/src/define-config.ts
index 62350e5..ddea1d5 100644
--- a/src/define-config.ts
+++ b/src/define-config.ts
@@ -1,3 +1,5 @@
+import type { OpenAPIV3 } from 'openapi-types';
+
 export interface OpenapiClientConfig {
   /**
    * openapi本地或者远程文件，支持格式：`yaml | json`
@@ -35,6 +37,10 @@ export interface OpenapiClientConfig {
    * 如果没有提供tags，则默认合并到`default`分组
    */
   tagToGroup?: boolean;
+  /**
+   * 加载完openapi文档后的事件，允许直接对文档进行修改
+   */
+  onDocumentLoaded?: (doc: OpenAPIV3.Document) => OpenAPIV3.Document | void;
 }
 
 export const defineConfig = (options: OpenapiClientConfig | OpenapiClientConfig[]) => {
diff --git a/src/lib/path-to-openapi.ts b/src/lib/path-to-openapi.ts
index 82661de..d50afed 100644
--- a/src/lib/path-to-openapi.ts
+++ b/src/lib/path-to-openapi.ts
@@ -2,8 +2,12 @@ import { readFile } from 'fs/promises';
 import path from 'node:path';
 import type { OpenAPIV3 } from 'openapi-types';
 import YAML from 'yaml';
+import type { OpenapiClientConfig } from '../define-config';
 
-export const pathToOpenapi = async (uri: string): Promise<OpenAPIV3.Document> => {
+export const pathToOpenapi = async (
+  uri: string,
+  onLoaded?: OpenapiClientConfig['onDocumentLoaded'],
+): Promise<OpenAPIV3.Document> => {
   let originContent: string;
   if (uri.startsWith('http:') || uri.startsWith('https:')) {
     const response = await fetch(uri, { method: 'get' });
@@ -12,9 +16,12 @@ export const pathToOpenapi = async (uri: string): Promise<OpenAPIV3.Document> =>
     originContent = await readFile(path.resolve(uri), 'utf8');
   }
 
+  let document: OpenAPIV3.Document;
   if (originContent.startsWith('{')) {
-    return JSON.parse(originContent);
+    document = JSON.parse(originContent);
   } else {
-    return YAML.parse(originContent);
+    document = YAML.parse(originContent);
   }
+
+  return onLoaded?.(document) || document;
 };
diff --git a/test/lib/path-to-openapi.test.ts b/test/lib/path-to-openapi.test.ts
index ec4cd1d..39ccd03 100644
--- a/test/lib/path-to-openapi.test.ts
+++ b/test/lib/path-to-openapi.test.ts
@@ -2,6 +2,7 @@ import { expect, test, vitest } from 'vitest';
 import { pathToOpenapi } from '../../src/lib/path-to-openapi';
 import path from 'node:path';
 import { readFileSync } from 'node:fs';
+import type { OpenAPIV3 } from 'openapi-types';
 
 test('从本地获取json', async () => {
   const result = await pathToOpenapi('./openapi/openapi.json');
@@ -32,6 +33,17 @@ test('从远程获取', async () => {
   globalThis.fetch = originalFetch;
 });
 
+test('支持加载事件', async () => {
+  let eventDocs: OpenAPIV3.Document | undefined;
+  const result = await pathToOpenapi('./openapi/openapi.json', (docs) => {
+    eventDocs = docs;
+  });
+  expect(result).toBe(eventDocs);
+  expect(JSON.stringify(result)).toMatchFileSnapshot(
+    path.resolve('openapi', 'openapi.json'),
+  );
+});
+
 test('解析失败则直接报错', async () => {
   await expect(() => pathToOpenapi('./cli.ts')).rejects.toThrowError();
 });