diff --git a/components/back-top/style/index.less b/components/back-top/style/index.less
index 52cde657f936..5918f0de817f 100644
--- a/components/back-top/style/index.less
+++ b/components/back-top/style/index.less
@@ -14,6 +14,10 @@
   height: 40px;
   cursor: pointer;
 
+  &:empty {
+    display: none;
+  }
+
   &-rtl {
     right: auto;
     left: 100px;