diff --git a/static/toc/doctoc.js b/static/toc/doctoc.js
index ed6eccb..5dbd7e6 100644
--- a/static/toc/doctoc.js
+++ b/static/toc/doctoc.js
@@ -125,7 +125,8 @@ function initSidebar(sidebarQuery, contentQuery, mode=1) {
                 };
             };
         });
-    }
+    };
+    $("#toc-container").prepend("<strong>文档目录</strong><hr>")
 }