diff --git a/framework/core/less/lib/Dropdown.less b/framework/core/less/lib/Dropdown.less
index a0d23100d..f0c622b19 100755
--- a/framework/core/less/lib/Dropdown.less
+++ b/framework/core/less/lib/Dropdown.less
@@ -33,6 +33,8 @@
       border: 0;
       background: none;
       white-space: nowrap;
+      overflow: hidden;
+      text-overflow: ellipsis;
       .box-shadow(none);
       text-align: left;
       font-size: 13px;