diff --git a/packages/devui-vue/devui/auto-complete/src/auto-complete.scss b/packages/devui-vue/devui/auto-complete/src/auto-complete.scss
index 8762011aa2..f47a25d190 100644
--- a/packages/devui-vue/devui/auto-complete/src/auto-complete.scss
+++ b/packages/devui-vue/devui/auto-complete/src/auto-complete.scss
@@ -18,6 +18,7 @@
 .devui-auto-complete {
   .devui-form-control {
     padding: 4px 8px;
+    width: 100%;
   }
 }