diff --git a/packages/components/message-box/src/index.vue b/packages/components/message-box/src/index.vue
index 6b8e6c6d2a..3f422d6a23 100644
--- a/packages/components/message-box/src/index.vue
+++ b/packages/components/message-box/src/index.vue
@@ -10,6 +10,7 @@
       <div
         ref="root"
         v-trap-focus
+        role="dialog"
         :aria-label="title || 'dialog'"
         aria-modal="true"
         :class="[