diff --git a/components/AiDvRender.vue b/components/AiDvRender.vue
index a7f8a10e..7b719a37 100644
--- a/components/AiDvRender.vue
+++ b/components/AiDvRender.vue
@@ -351,6 +351,7 @@ export default {
     width: 189px;
     height: 95px;
     background: url("https://cdn.cunwuyun.cn/pingchang/pingchangMapLegend.png");
+    background-size: 100% 100%;
     position: absolute;
     bottom: 32px;
     right: 32px;