diff --git a/components/vc-tabs/src/TabBarTabsNode.jsx b/components/vc-tabs/src/TabBarTabsNode.jsx
index e22a37154..ed3b87920 100644
--- a/components/vc-tabs/src/TabBarTabsNode.jsx
+++ b/components/vc-tabs/src/TabBarTabsNode.jsx
@@ -56,7 +56,7 @@ export default {
           {...events}
           class={cls}
           key={key}
-          style={{ marginRight: tabBarGutter && index === children.length - 1 ? 0 : tabBarGutter }}
+          style={{ marginRight: tabBarGutter && index === children.length - 1 ? 0 : `${tabBarGutter}px` }}
           {...{ directives: directives }}
         >
           {tab}