diff --git a/packages/html5/src/index.ts b/packages/html5/src/index.ts
index 2057f7a..7071c59 100644
--- a/packages/html5/src/index.ts
+++ b/packages/html5/src/index.ts
@@ -1,5 +1,5 @@
 import LaTeX2JS from 'latex2js';
-import { getMathJax, loadMathJax } from 'mathjaxjs';
+import { getMathJax, loadMathJax, DEFAULT_CONFIG, type LoadMathJaxConfig } from 'mathjaxjs';
 import pspicture from './components/pspicture.js';
 import nicebox from './components/nicebox.js';
 import enumerate from './components/enumerate.js';
@@ -9,7 +9,7 @@ import macros from './components/macros';
 
 const ELEMENTS = { pspicture, nicebox, enumerate, verbatim, math, macros };
 
-export { pspicture, nicebox, enumerate, verbatim, math, macros };
+export { pspicture, nicebox, enumerate, verbatim, math, macros ,DEFAULT_CONFIG};
 
 export default function render(tex: string, resolve: (div: HTMLDivElement) => void): void {
   const done = () => {
@@ -34,8 +34,9 @@ export default function render(tex: string, resolve: (div: HTMLDivElement) => vo
   loadMathJax(done);
 }
 
-export const init = (): void => {
-  loadMathJax();
+
+export const init = (config?: typeof DEFAULT_CONFIG & LoadMathJaxConfig): void => {
+  loadMathJax(undefined, config);
   document.querySelectorAll('script[type="text/latex"]').forEach((el) => {
     render(el.innerHTML, (div: HTMLDivElement) => {
       if (el.parentNode) {
diff --git a/packages/mathjaxjs-react/src/components/MathJaxProvider.tsx b/packages/mathjaxjs-react/src/components/MathJaxProvider.tsx
index 197e695..a381513 100644
--- a/packages/mathjaxjs-react/src/components/MathJaxProvider.tsx
+++ b/packages/mathjaxjs-react/src/components/MathJaxProvider.tsx
@@ -8,6 +8,8 @@ declare global {
 }
 
 interface MathJaxConfig {
+  /** 自定义 MathJax 脚本地址，不传则使用默认 CDN */
+  scriptURL?: string;
   tex?: {
     inlineMath?: string[][];
     displayMath?: string[][];
diff --git a/packages/mathjaxjs-react/src/index.ts b/packages/mathjaxjs-react/src/index.ts
index 3e71449..7d1ee38 100644
--- a/packages/mathjaxjs-react/src/index.ts
+++ b/packages/mathjaxjs-react/src/index.ts
@@ -1,3 +1,3 @@
 export { default as MathJaxProvider } from './components/MathJaxProvider';
 
-export { DEFAULT_CONFIG, getMathJax, loadMathJax } from 'mathjaxjs';
+export { DEFAULT_CONFIG, DEFAULT_SCRIPT_URL, getMathJax, loadMathJax } from 'mathjaxjs';
diff --git a/packages/mathjaxjs/src/index.ts b/packages/mathjaxjs/src/index.ts
index 91ccfda..d6badc1 100644
--- a/packages/mathjaxjs/src/index.ts
+++ b/packages/mathjaxjs/src/index.ts
@@ -1,3 +1,6 @@
+/** 默认 MathJax 脚本地址，可由用户通过 config.scriptURL 覆盖 */
+export const DEFAULT_SCRIPT_URL = 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js';
+
 export const DEFAULT_CONFIG = {
   tex: {
     inlineMath: [['$', '$'], ['\\(', '\\)']],
@@ -16,11 +19,19 @@ export const DEFAULT_CONFIG = {
   }
 };
 
+/** 扩展配置：可传入 scriptURL 自定义加载地址 */
+export interface LoadMathJaxConfig extends Record<string, unknown> {
+  scriptURL?: string;
+}
+
 let mathJaxInstance: any = null;
 
 export const getMathJax = () => mathJaxInstance || (globalThis as any).MathJax;
 
-export const loadMathJax = async (callback = () => { }, config = DEFAULT_CONFIG) => {
+export const loadMathJax = async (
+  callback = () => { },
+  config: typeof DEFAULT_CONFIG & LoadMathJaxConfig = DEFAULT_CONFIG
+) => {
   if (typeof window === 'undefined') {
     callback();
     return;
@@ -32,6 +43,8 @@ export const loadMathJax = async (callback = () => { }, config = DEFAULT_CONFIG)
     return;
   }
 
+  const scriptURL = config.scriptURL ?? DEFAULT_SCRIPT_URL;
+
   try {
     (globalThis as any).MathJax = {
       ...config,
@@ -49,7 +62,7 @@ export const loadMathJax = async (callback = () => { }, config = DEFAULT_CONFIG)
     };
 
     const script = document.createElement('script');
-    script.src = 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js';
+    script.src = scriptURL;
     script.async = true;
     script.id = 'MathJax-script';
     script.onload = () => {
diff --git a/packages/react/src/components/MathJaxProvider.tsx b/packages/react/src/components/MathJaxProvider.tsx
index 5122864..1c46e5f 100644
--- a/packages/react/src/components/MathJaxProvider.tsx
+++ b/packages/react/src/components/MathJaxProvider.tsx
@@ -7,6 +7,8 @@ declare global {
 }
 
 interface MathJaxConfig {
+  /** 自定义 MathJax 脚本地址 */
+  scriptURL?: string;
   tex?: {
     inlineMath?: string[][];
     displayMath?: string[][];
@@ -17,9 +19,13 @@ interface MathJaxConfig {
   };
 }
 
+const DEFAULT_SCRIPT_URL = 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js';
+
 interface MathJaxProviderProps {
   children: ReactNode;
   config?: MathJaxConfig;
+  /** 自定义 MathJax 脚本地址，不传则使用默认 CDN */
+  scriptURL?: string;
   loadingComponent?: ReactNode;
   className?: string;
 }
@@ -27,6 +33,7 @@ interface MathJaxProviderProps {
 export default function MathJaxProvider({ 
   children, 
   config,
+  scriptURL: scriptURLProp,
   loadingComponent,
   className = ""
 }: MathJaxProviderProps) {
@@ -51,6 +58,8 @@ export default function MathJaxProvider({
     chtml: { ...defaultConfig.chtml, ...config?.chtml }
   };
 
+  const scriptURL = scriptURLProp ?? config?.scriptURL ?? DEFAULT_SCRIPT_URL;
+
   useEffect(() => {
     setIsClient(true);
     
@@ -66,7 +75,7 @@ export default function MathJaxProvider({
     };
 
     const script = document.createElement('script');
-    script.src = 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js';
+    script.src = scriptURL;
     script.async = true;
     script.onload = () => {
       console.log('MathJax script loaded');