diff --git a/src/config.ts b/src/config.ts
index e1aa684..24a7a9c 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -9,7 +9,7 @@ export const imgPreviewSuffix = [
     "svg",
     "webp",
 ];
-export const msDocPreviewSuffix = [
+export let msDocPreviewSuffix = [
     "ppt",
     "pptx",
     "pps",
@@ -148,3 +148,7 @@ export const getTaskProgress = (type: any, status: any) => {
     }
     return i18next.t(taskProgress[status]);
 };
+
+export const setWopiExts = (exts: string[]) => {
+    msDocPreviewSuffix = exts;
+};
\ No newline at end of file
diff --git a/src/middleware/Init.js b/src/middleware/Init.js
index 8aa4585..a66a5b9 100644
--- a/src/middleware/Init.js
+++ b/src/middleware/Init.js
@@ -7,6 +7,7 @@ import {
     toggleSnackbar,
 } from "../redux/explorer";
 import i18next from "../i18n";
+import { msDocPreviewSuffix, setWopiExts } from "../config";
 
 const initUserConfig = (siteConfig) => {
     if (siteConfig.user !== undefined && !siteConfig.user.anonymous) {
@@ -46,6 +47,7 @@ export const InitSiteConfig = (rawStore) => {
 
     // 更改站点标题
     document.title = rawStore.siteConfig.title;
+
     return rawStore;
 };
 
@@ -61,6 +63,11 @@ export async function UpdateSiteConfig(store) {
                 JSON.stringify(response.data)
             );
 
+            // 更新 office WOPI 预览后缀
+            if (response.data.wopi_exts) {
+                setWopiExts(response.data.wopi_exts);
+            }
+
             // 偏爱的列表样式
             const preferListMethod = Auth.GetPreference("view_method");
             if (preferListMethod) {
diff --git a/src/reducers/index.js b/src/reducers/index.js
index ae23b94..83716ff 100644
--- a/src/reducers/index.js
+++ b/src/reducers/index.js
@@ -65,6 +65,7 @@ export const initState = {
         captcha_ReCaptchaKey: "defaultKey",
         captcha_type: "normal",
         tcaptcha_captcha_app_id: "",
+        wopi_exts: [],
     },
     navigator: {
         path: "/",