diff --git a/docs/appendix.md b/docs/appendix.md
index a82308b..f2b9e11 100644
--- a/docs/appendix.md
+++ b/docs/appendix.md
@@ -1,4 +1,4 @@
-# 附录：重要概念
+# 附录
 
 *编辑：赵志民, 李一飞*