diff --git a/src/components/TreeNode/styles.less b/src/components/TreeNode/styles.less
index e70075c..6748a73 100644
--- a/src/components/TreeNode/styles.less
+++ b/src/components/TreeNode/styles.less
@@ -41,6 +41,7 @@
   position: absolute;
   right: 100%;
   margin-right: 4px;
+  user-select: none;
 }
 
 .@{css-prefix}-colon {