diff --git a/frontend/src/components/competition/ProjectDetail.jsx b/frontend/src/components/competition/ProjectDetail.jsx
index 3eaf105..0f955e0 100644
--- a/frontend/src/components/competition/ProjectDetail.jsx
+++ b/frontend/src/components/competition/ProjectDetail.jsx
@@ -17,10 +17,10 @@ const { useBreakpoint } = Grid;
 
 const getImageUrl = (url) => {
   if (!url) return '';
-  if (url.startsWith('http') || url.startsWith('//')) return url;
-  const apiUrl = import.meta.env.VITE_API_URL || 'http://localhost:8000/api';
-  const baseUrl = apiUrl.replace(/\/api\/?$/, '');
-  return `${baseUrl}${url}`;
+  if (url.startsWith('http') || url.startsWith('//')) {
+    try { return new URL(url).pathname; } catch { return url; }
+  }
+  return url;
 };
 
 const CodeBlock = ({ inline, className, children, ...props }) => {
diff --git a/frontend/src/pages/Home.jsx b/frontend/src/pages/Home.jsx
index 9e08452..2db6fc1 100644
--- a/frontend/src/pages/Home.jsx
+++ b/frontend/src/pages/Home.jsx
@@ -11,8 +11,10 @@ const { Title, Paragraph } = Typography;
 // 获取完整图片 URL
 const getImageUrl = (url) => {
   if (!url) return '';
-  if (url.startsWith('http') || url.startsWith('//')) return url;
-  return `http://localhost:8876${url}`;
+  if (url.startsWith('http') || url.startsWith('//')) {
+    try { return new URL(url).pathname; } catch { return url; }
+  }
+  return url;
 };
 
 const Home = () => {