diff --git a/components/tree/style/index.less b/components/tree/style/index.less
index 90c3ef888a..6f086b895b 100644
--- a/components/tree/style/index.less
+++ b/components/tree/style/index.less
@@ -93,7 +93,7 @@
         height: 24px;
         line-height: 24px;
         display: inline-block;
-        vertical-align: middle;
+        vertical-align: top;
         border: 0 none;
         cursor: pointer;
         outline: none;