diff --git a/packages/ui-default/components/editor/index.tsx b/packages/ui-default/components/editor/index.tsx
index f7a7d19cd..3d6d873ee 100644
--- a/packages/ui-default/components/editor/index.tsx
+++ b/packages/ui-default/components/editor/index.tsx
@@ -146,8 +146,13 @@ export default class Editor extends DOMAttachedObject {
 
   async initMarkdownEditor() {
     const pagename = document.documentElement.getAttribute('data-page');
-    const isProblemPage = ['problem_create', 'problem_edit'].includes(pagename);
-    const isProblemEdit = pagename === 'problem_edit';
+    const pageUploadConfig: Record<string, { endpoint: string, type?: string }> = {
+      problem_edit: { endpoint: './files', type: 'additional_file' },
+      homework_edit: { endpoint: './file' },
+      contest_edit: { endpoint: './management', type: 'public' },
+    };
+    const uploadCfg = pageUploadConfig[pagename];
+    const useFileProtocol = !!uploadCfg || ['problem_create', 'homework_create', 'contest_create'].includes(pagename);
     const that = this;
     const { $dom } = this;
     const hasFocus = $dom.is(':focus') || $dom.hasClass('autofocus');
@@ -234,11 +239,11 @@ export default class Editor extends DOMAttachedObject {
           }
           if (!ext) return i18n('No Supported file type.');
           const filename = `${nanoid()}.${ext}`;
-          await uploadFiles(isProblemEdit ? './files' : '/file', [files[0]], {
-            type: isProblemEdit ? 'additional_file' : undefined,
+          await uploadFiles(uploadCfg?.endpoint || '/file', [files[0]], {
+            type: uploadCfg?.type,
             filenameCallback: () => filename,
           }).then(() => {
-            callback([`${isProblemPage ? 'file://' : `/file/${UserContext._id}/`}${filename}`]);
+            callback([`${useFileProtocol ? 'file://' : `/file/${UserContext._id}/`}${filename}`]);
           }).catch(() => {
             callback([]);
           });
diff --git a/packages/ui-default/components/editor/mdeditor.ts b/packages/ui-default/components/editor/mdeditor.ts
index 39a770f6b..b8483c2b4 100644
--- a/packages/ui-default/components/editor/mdeditor.ts
+++ b/packages/ui-default/components/editor/mdeditor.ts
@@ -13,7 +13,13 @@ import { Media } from '../../backendlib/markdown-it-media';
 import { xssProtector } from '../../backendlib/markdown-it-xss';
 
 const pagename = document.documentElement.getAttribute('data-page');
-const isProblemPage = ['problem_create', 'problem_edit'].includes(pagename);
+const previewConfig: Record<string, string> = {
+  problem_edit: './file/',
+  homework_edit: './file/public/',
+  contest_edit: './file/public/',
+};
+const isCreatePage = ['problem_create', 'homework_create', 'contest_create'].includes(pagename);
+const filePreviewPrefix = previewConfig[pagename] || (isCreatePage ? `/file/${UserContext._id}/` : null);
 
 config({
   markdownItConfig(mdit) {
@@ -31,9 +37,9 @@ config({
     mdit.use(MergeCells);
     mdit.use(xssProtector);
     mdit.use(katex);
-    if (isProblemPage) {
+    if (filePreviewPrefix) {
       mdit.core.ruler.before('normalize', 'xss', (state) => {
-        state.src = state.src.replace(/file:\/\//g, pagename === 'problem_create' ? `/file/${UserContext._id}/` : './file/');
+        state.src = state.src.replace(/file:\/\//g, filePreviewPrefix);
       });
     }
   },