diff --git a/components/timeline/style/index.less b/components/timeline/style/index.less
index c829a2a171..db912b343b 100644
--- a/components/timeline/style/index.less
+++ b/components/timeline/style/index.less
@@ -82,6 +82,7 @@
       position: relative;
       top: -(@font-size-base * @line-height-base - @font-size-base) + 1px;
       margin: 0 0 0 18px;
+      word-break: break-word;
     }
 
     &-last {