diff --git a/static/js/pages/dashboard.js b/static/js/pages/dashboard.js
index 10f6e80..7e13f31 100644
--- a/static/js/pages/dashboard.js
+++ b/static/js/pages/dashboard.js
@@ -289,9 +289,10 @@ const PageDashboard = {
         const isAll = supported === 'all';
         const compatLabel = isAll ? '全' : '限';
         const compatClass = isAll ? 'badge-info' : 'badge-warning';
+        const preview = `/dashboard/${theme.id}/preview.jpg`;
         return `
         <div class="glass-card theme-card" data-theme-id="${theme.id}">
-            <div class="theme-card-preview">${icon}</div>
+            <div class="theme-card-preview" style="background-image:url(${preview});background-size:cover;background-position:center">${icon}</div>
             <div class="theme-card-info">
                 <div class="theme-card-name">${theme.name || 'Unnamed'}</div>
                 <div class="theme-card-meta">