diff --git a/apps/web/src/pages/generate/components/PreviewVideoPanel.tsx b/apps/web/src/pages/generate/components/PreviewVideoPanel.tsx
index 5828a022c..4f46cd07f 100644
--- a/apps/web/src/pages/generate/components/PreviewVideoPanel.tsx
+++ b/apps/web/src/pages/generate/components/PreviewVideoPanel.tsx
@@ -108,7 +108,7 @@ export const PreviewVideoPanel: React.FC<PreviewVideoPanelProps> = ({
       titleSettings.position,
       60,
     )
-  }, [titleText, titleSettings])
+  }, [titleText, titleSettings, showTitlePreview])
 
   // video 模式：ResizeObserver 监听容器尺寸变化 → 重绘
   useEffect(() => {