diff --git a/style/web/components/select/_index.less b/style/web/components/select/_index.less
index 8e7d997da3..eeeec78d6e 100644
--- a/style/web/components/select/_index.less
+++ b/style/web/components/select/_index.less
@@ -105,6 +105,9 @@
   // TODO: select_input 重构后可删除
   .@{prefix}-tag + .@{prefix}-input__wrap {
     margin-left: @select-placeholder-margin;
+    .@{prefix}-input__inner {
+      width: 100%;
+    }
   }
 
   // TODO: select_input 重构后可删除