diff --git a/docs/chapter_sorting/index.assets/sorting_examples.png b/docs/chapter_sorting/intro_to_sort.assets/sorting_examples.png
similarity index 100%
rename from docs/chapter_sorting/index.assets/sorting_examples.png
rename to docs/chapter_sorting/intro_to_sort.assets/sorting_examples.png
diff --git a/docs/chapter_sorting/index.md b/docs/chapter_sorting/intro_to_sort.md
similarity index 97%
rename from docs/chapter_sorting/index.md
rename to docs/chapter_sorting/intro_to_sort.md
index 3febe21..f9a9d0f 100644
--- a/docs/chapter_sorting/index.md
+++ b/docs/chapter_sorting/intro_to_sort.md
@@ -2,14 +2,14 @@
 comments: true
 ---
 
-# 排序算法
+# 排序简介
 
 「排序算法 Sorting Algorithm」使得列表中的所有元素按照从小到大的顺序排列。
 
 - 待排序的列表的 **元素类型** 可以是整数、浮点数、字符、或字符串；
 - 排序算法可以根据需要设定 **判断规则** ，例如数字大小、字符 ASCII 码顺序、自定义规则；
 
-![sorting_examples](index.assets/sorting_examples.png)
+![sorting_examples](intro_to_sort.assets/sorting_examples.png)
 
 <p align="center"> Fig. 排序中的不同元素类型和判断规则 </p>
 
diff --git a/mkdocs.yml b/mkdocs.yml
index d31cec1..29ea196 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -162,7 +162,7 @@ nav:
     - 哈希查找: chapter_searching/hashing_search.md
     - 小结: chapter_searching/summary.md
   - 排序算法:
-    - chapter_sorting/index.md
+    - 排序简介: chapter_sorting/intro_to_sort.md
     - 冒泡排序: chapter_sorting/bubble_sort.md
     - 插入排序: chapter_sorting/insertion_sort.md
     - 快速排序: chapter_sorting/quick_sort.md