diff --git a/parser/README.md b/parser/leetcode_examples/README.md
similarity index 99%
rename from parser/README.md
rename to parser/leetcode_examples/README.md
index 8881e67..5170975 100644
--- a/parser/README.md
+++ b/parser/leetcode_examples/README.md
@@ -1,6 +1,6 @@
 # parser
 先进行词法分析，然后进行语法分析，然后编写递归下降程序。可以将代码形成框架，词法分析每次只需要改变正则表达式部分即可，语法分析代码只需要实现语法对应的函数.
-我这里列举了4个题目，都可以这样解答。
+我这里列举了4个 leetcode 题目，都可以这样解答。
 
 
 * [Lisp 语法解析](#lisp-语法解析)
diff --git a/parser/brace_expansion.py b/parser/leetcode_examples/brace_expansion.py
similarity index 100%
rename from parser/brace_expansion.py
rename to parser/leetcode_examples/brace_expansion.py
diff --git a/parser/calculator.py b/parser/leetcode_examples/calculator.py
similarity index 100%
rename from parser/calculator.py
rename to parser/leetcode_examples/calculator.py
diff --git a/parser/lisp_expression.py b/parser/leetcode_examples/lisp_expression.py
similarity index 100%
rename from parser/lisp_expression.py
rename to parser/leetcode_examples/lisp_expression.py
diff --git a/parser/number_of_atoms.py b/parser/leetcode_examples/number_of_atoms.py
similarity index 100%
rename from parser/number_of_atoms.py
rename to parser/leetcode_examples/number_of_atoms.py