diff --git a/README.md b/README.md
index a85bc69..37d366d 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@
 
 - 第一天：[前置知识(http.Handler接口)](https://geektutu.com/post/gee-day1.html) | [Code](gee-web/day1-http-base)
 - 第二天：[上下文设计(Context)](https://geektutu.com/post/gee-day2.html) | [Code](gee-web/day2-context)
-- 第三天：[Tire树路由(Router)](https://geektutu.com/post/gee-day3.html) | [Code](gee-web/day3-router)
+- 第三天：[Trie树路由(Router)](https://geektutu.com/post/gee-day3.html) | [Code](gee-web/day3-router)
 - 第四天：[分组控制(Group)](https://geektutu.com/post/gee-day4.html) | [Code](gee-web/day4-group)
 - 第五天：[中间件(Middleware)](https://geektutu.com/post/gee-day5.html) | [Code](gee-web/day5-middleware)
 - 第六天：[HTML模板(Template)](https://geektutu.com/post/gee-day6.html) | [Code](gee-web/day6-template)
@@ -70,7 +70,7 @@ What can I write in 7 days? A gin-like web framework? A distributed cache like g
 
 - Day 1 - http.Handler Interface Basic [Code](gee-web/day1-http-base)
 - Day 2 - Design a Flexiable Context [Code](gee-web/day2-context)
-- Day 3 - Router with Tire-Tree Algorithm [Code](gee-web/day3-router)
+- Day 3 - Router with Trie-Tree Algorithm [Code](gee-web/day3-router)
 - Day 4 - Group Control [Code](gee-web/day4-group)
 - Day 5 - Middleware Mechanism [Code](gee-web/day5-middleware)
 - Day 6 - Embeded Template Support [Code](gee-web/day6-template)
diff --git a/gee-web/README.md b/gee-web/README.md
index 67ccdf2..6e8f19b 100644
--- a/gee-web/README.md
+++ b/gee-web/README.md
@@ -12,7 +12,7 @@
 
 - [第一天：前置知识(http.Handler接口)](https://geektutu.com/post/gee-day1.html)
 - [第二天：上下文设计(Context)](https://geektutu.com/post/gee-day2.html)
-- [第三天：Tire树路由(Router)](https://geektutu.com/post/gee-day3.html)
+- [第三天：Trie树路由(Router)](https://geektutu.com/post/gee-day3.html)
 - [第四天：分组控制(Group)](https://geektutu.com/post/gee-day4.html)
 - [第五天：中间件(Middleware)](https://geektutu.com/post/gee-day5.html)
 - [第六天：HTML模板(Template)](https://geektutu.com/post/gee-day6.html)
diff --git a/gee-web/doc/gee.md b/gee-web/doc/gee.md
index 87e3a34..0596aaf 100644
--- a/gee-web/doc/gee.md
+++ b/gee-web/doc/gee.md
@@ -65,7 +65,7 @@ func handler(w http.ResponseWriter, r *http.Request) {
 
 - 第一天：[前置知识(http.Handler接口)](https://geektutu.com/post/gee-day1.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day1-http-base)
 - 第二天：[上下文设计(Context)](https://geektutu.com/post/gee-day2.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day2-context)
-- 第三天：[Tire树路由(Router)](https://geektutu.com/post/gee-day3.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day3-router)
+- 第三天：[Trie树路由(Router)](https://geektutu.com/post/gee-day3.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day3-router)
 - 第四天：[分组控制(Group)](https://geektutu.com/post/gee-day4.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day4-group)
 - 第五天：[中间件(Middleware)](https://geektutu.com/post/gee-day5.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day5-middleware)
 - 第六天：[HTML模板(Template)](https://geektutu.com/post/gee-day6.html)，[Code - Github](https://github.com/geektutu/7days-golang/tree/master/gee-web/day6-template)