diff --git a/SUMMARY.md b/SUMMARY.md
index 3ae54443..dde02f47 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -1,3 +1,5 @@
+This file is used to generate gitbook catalogue.
+
 # Summary
 
 * 算法
@@ -30,7 +32,5 @@
   * [一致性](/notes/一致性.md)
   * [分布式问题分析](/notes/分布式问题分析.md)
 
-This file is used to generate gitbook catalogue.
-