diff --git a/examples/embed.tsx b/examples/embed.tsx
index 827ade955..1afad7e27 100644
--- a/examples/embed.tsx
+++ b/examples/embed.tsx
@@ -4,7 +4,7 @@ import {createRoot} from 'react-dom/client';
 import axios from 'axios';
 import {match} from 'path-to-regexp';
 import copy from 'copy-to-clipboard';
-import {normalizeLink} from 'amis-core';
+import {normalizeLink, supportsMjs} from 'amis-core';
 
 import qs from 'qs';
 import {
@@ -20,6 +20,7 @@ import {
 import 'amis-ui/lib/locale/en-US';
 import 'history';
 import {attachmentAdpator} from 'amis-core';
+import {pdfUrlLoad} from './loadPdfjsWorker';
 
 import type {ToastLevel, ToastConf} from 'amis-ui/lib/components/Toast';
 
@@ -249,7 +250,7 @@ export function embed(
     richTextToken: '',
     affixOffsetBottom: 0,
     customStyleClassPrefix: '.amis-scope',
-    pdfjsWorkerSrc: '/sdk/thirds/pdfjs-dist/build/pdf.worker.min.mjs',
+    pdfjsWorkerSrc: supportsMjs() ? pdfUrlLoad() : '',
     ...env
   };
 
diff --git a/examples/loadPdfjsWorker.ts b/examples/loadPdfjsWorker.ts
new file mode 100644
index 000000000..7df37d744
--- /dev/null
+++ b/examples/loadPdfjsWorker.ts
@@ -0,0 +1,17 @@
+// 这是个特殊的方法，请看考 mod.js 里面的实现。
+export function pdfUrlLoad() {
+  // @ts-ignore
+  const pdfWorker = __uri('pdfjs-dist/build/pdf.worker.min.mjs');
+
+  return filterUrl(pdfWorker);
+}
+
+function __uri(url: string) {
+  return url;
+}
+
+// 用于发布 sdk 版本的时候替换，因为不确定 sdk 版本怎么部署，而 worker 地址路径不可知。
+// 所以会被 fis3 替换成取相对的代码。
+function filterUrl(url: string) {
+  return url;
+}
diff --git a/fis-conf.js b/fis-conf.js
index 2a9d2acad..540d4a754 100644
--- a/fis-conf.js
+++ b/fis-conf.js
@@ -650,7 +650,8 @@ if (fis.project.currentMedia() === 'publish-sdk') {
       // 如果 sdk 和 worker 不是部署在一个地方，请通过指定 MonacoEnvironment.getWorkerUrl
       if (
         file.subpath === '/node_modules/amis-ui/lib/components/Editor.js' ||
-        file.subpath === '/examples/loadMonacoEditor.ts'
+        file.subpath === '/examples/loadMonacoEditor.ts' ||
+        file.subpath === '/examples/loadPdfjsWorker.ts'
       ) {
         contents = contents.replace(
           /function\sfilterUrl\(url\)\s\{\s*return\s*url;/m,
diff --git a/packages/amis-core/src/utils/helper.ts b/packages/amis-core/src/utils/helper.ts
index 7ee2029d0..f026941cb 100644
--- a/packages/amis-core/src/utils/helper.ts
+++ b/packages/amis-core/src/utils/helper.ts
@@ -2329,3 +2329,12 @@ export class TestIdBuilder {
     return data ? filter(this.testId, data) : this.testId;
   }
 }
+
+export function supportsMjs() {
+  try {
+    new Function('import("")');
+    return true;
+  } catch (e) {
+    return false;
+  }
+}