diff --git a/src/assets/css/components/views/charts2/linkTrafficSankey.scss b/src/assets/css/components/views/charts2/linkTrafficSankey.scss
index 9cb5c532..e9f5babe 100644
--- a/src/assets/css/components/views/charts2/linkTrafficSankey.scss
+++ b/src/assets/css/components/views/charts2/linkTrafficSankey.scss
@@ -13,6 +13,7 @@
     color: #333;
     bottom: 50px;
     font-size: 12px;
+    font-weight: 500;
     transform: translateX(-50%);
   }
   .el-tabs {