diff --git a/packages/vant-css/src/dialog.css b/packages/vant-css/src/dialog.css
index d43d6d901..4529a849a 100644
--- a/packages/vant-css/src/dialog.css
+++ b/packages/vant-css/src/dialog.css
@@ -35,6 +35,7 @@
 
   &__footer {
     overflow: hidden;
+    user-select: none;
 
     &--buttons {
       display: flex;