diff --git a/sao/src/sao.less b/sao/src/sao.less
index a81f96f827..37417ddd2d 100644
--- a/sao/src/sao.less
+++ b/sao/src/sao.less
@@ -923,6 +923,10 @@ img.icon {
                 display: flex;
                 overflow: hidden;
 
+                &.dropdown {
+                    overflow: visible;
+                }
+
                 > label {
                     margin: 0;
                     overflow: hidden;