diff --git a/video-gen-admin/src/pages/AdminGenerationAiRecords.tsx b/video-gen-admin/src/pages/AdminGenerationAiRecords.tsx
index 89d7a506..713145c4 100644
--- a/video-gen-admin/src/pages/AdminGenerationAiRecords.tsx
+++ b/video-gen-admin/src/pages/AdminGenerationAiRecords.tsx
@@ -479,7 +479,22 @@ const AdminGenerationAiRecords: React.FC = () => {
     ) : null;
 
     if (!preview.videoCoverUrl) {
-      return <MediaPlaceholder text="此视频无封面" minHeight={340} action={playButton} />;
+      return (
+          <div
+              style={{
+                  position: 'absolute',
+                  inset: 0,
+                  borderRadius: 12,
+                  overflow: 'hidden',
+                  background: '#f8f9fc',
+                  display: 'flex',
+                  alignItems: 'center',
+                  justifyContent: 'center',
+              }}
+          >
+              <MediaPlaceholder text="此视频无封面" minHeight={340} action={playButton} />
+          </div>
+      );
     }
 
     if (resourceState.videoCover === 'invalid') {