diff --git a/src/components/TemplateCard/index.css b/src/components/TemplateCard/index.css
index 56025ec..9ff53e5 100644
--- a/src/components/TemplateCard/index.css
+++ b/src/components/TemplateCard/index.css
@@ -171,6 +171,13 @@
   backface-visibility: hidden;
 }
 
+/* 确保video的poster填满整个容器 */
+.single-video[poster] {
+  background-size: cover !important;
+  background-position: center !important;
+  background-repeat: no-repeat !important;
+}
+
 /* 视频样式 */
 .full-video {
   width: 100%;
diff --git a/src/components/TemplateCard/index.tsx b/src/components/TemplateCard/index.tsx
index b5a05f0..68ef425 100644
--- a/src/components/TemplateCard/index.tsx
+++ b/src/components/TemplateCard/index.tsx
@@ -122,7 +122,7 @@ export default function TemplateCard({ template, onClick }: TemplateCardProps) {
                   autoplay
                   muted
                   loop
-                  objectFit='fill'
+                  objectFit='cover'
                   showPlayBtn={false}
                   showCenterPlayBtn={false}
                   showFullscreenBtn={false}