diff --git a/src/pages/org/homepage.vue b/src/pages/org/homepage.vue
index d05e07d..99ab5aa 100644
--- a/src/pages/org/homepage.vue
+++ b/src/pages/org/homepage.vue
@@ -44,7 +44,8 @@
 </template>
 
 <script lang="ts">
-import { computed, defineComponent, nextTick, onMounted, ref } from "vue";
+import { computedAsync } from "@vueuse/core";
+import { defineComponent, nextTick, onMounted, ref } from "vue";
 import {
   Button,
   CellGroup,
@@ -56,11 +57,38 @@ import {
 import { marked } from "marked";
 import useOrg from "~/store/org";
 import { ImageHelper } from "~/utils";
+import { UpyunAccess } from "~/utils/upyun";
 
 const ORG_HOMEPAGE_IMAGE_MAX_BYTES = 10 * 1024 * 1024;
 
 marked.setOptions({ breaks: true, gfm: true });
 
+/** 历史失败上传留在正文里的占位，避免继续污染预览 */
+function stripBrokenCompressMarkdown(md: string): string {
+  return md
+    .replace(/!\[[^\]]*\]\(\s*failed to open file[^)]*\)/g, "")
+    .replace(/\n{3,}/g, "\n\n");
+}
+
+/** 预览区 img：又拍云需带 _upt，否则浏览器无法加载 */
+async function signUpyunImagesInMarkedHtml(html: string): Promise<string> {
+  if (typeof document === "undefined" || !html.includes("<img")) {
+    return html;
+  }
+  const wrap = document.createElement("div");
+  wrap.innerHTML = html;
+  const imgs = wrap.querySelectorAll("img[src]");
+  await Promise.all(
+    Array.from(imgs).map(async (el) => {
+      const src = el.getAttribute("src");
+      if (!src?.includes("upyun")) return;
+      const signed = await UpyunAccess.getSign(src);
+      if (signed) el.setAttribute("src", signed);
+    }),
+  );
+  return wrap.innerHTML;
+}
+
 export default defineComponent({
   name: "org-homepage",
   components: {
@@ -75,10 +103,15 @@ export default defineComponent({
     const markdownFieldRef = ref<InstanceType<typeof Field> | null>(null);
     const imageUploading = ref(false);
 
-    const previewHtml = computed(() => {
-      const raw = (markdownText.value || "").trim();
-      return raw ? marked(raw) : '<p class="preview-empty">暂无内容</p>';
-    });
+    const previewHtml = computedAsync(
+      async () => {
+        const raw = (markdownText.value || "").trim();
+        if (!raw) return '<p class="preview-empty">暂无内容</p>';
+        const html = marked.parse(raw) as string;
+        return signUpyunImagesInMarkedHtml(html);
+      },
+      '<p class="preview-empty">暂无内容</p>',
+    );
 
     const getMarkdownTextarea = (): HTMLTextAreaElement | null => {
       const root = markdownFieldRef.value as unknown as { $el?: HTMLElement };
@@ -154,7 +187,8 @@ export default defineComponent({
         showFailToast("请先选择机构");
         return;
       }
-      markdownText.value = (await getHomepage(store.currentOrgId)) || "";
+      const loaded = (await getHomepage(store.currentOrgId)) || "";
+      markdownText.value = stripBrokenCompressMarkdown(loaded);
     });
 
     const onSave = async () => {
@@ -162,7 +196,9 @@ export default defineComponent({
         showFailToast("请先选择机构");
         return;
       }
-      const ok = await saveHomepage(store.currentOrgId, markdownText.value);
+      const cleaned = stripBrokenCompressMarkdown(markdownText.value);
+      markdownText.value = cleaned;
+      const ok = await saveHomepage(store.currentOrgId, cleaned);
       if (ok) {
         showSuccessToast("保存成功");
       }