diff --git a/packages/amis-ui/scss/components/_alert.scss b/packages/amis-ui/scss/components/_alert.scss
index 93f5602af..f0d7fc348 100644
--- a/packages/amis-ui/scss/components/_alert.scss
+++ b/packages/amis-ui/scss/components/_alert.scss
@@ -48,6 +48,7 @@
     }
 
     .#{$ns}Alert-desc {
+      min-height: #{px2rem(24px)};
       line-height: #{px2rem(24px)};
     }
   }