diff --git a/components/table/style/index.less b/components/table/style/index.less
index 6acfc38fc3..b17f0a5024 100644
--- a/components/table/style/index.less
+++ b/components/table/style/index.less
@@ -71,8 +71,8 @@
       right: 6px;
       top: 50%;
       width: 14px;
-      height: @font-size-lg;
-      margin-top: -@font-size-lg / 2;
+      height: @font-size-lg + 1px;
+      margin-top: -(@font-size-lg + 1px) / 2;
       text-align: center;
       color: @table-header-icon-color;
       transition: all .3s;