diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..8c03abe
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 youmetme
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/README.md b/README.md
index 8c83772..f255086 100644
--- a/README.md
+++ b/README.md
@@ -82,4 +82,169 @@ int main(int argc, char *argv[]) {
 ```bash
 example -h
 ```
-![帮助信息](docs/images/help.png)
\ No newline at end of file
+![帮助信息](docs/images/help.png)
+
+
+# API
+该API将分为两类，一类是用于构造解析器，另一类将用于解析参数
+
+## 构造解析器
+
+1. 初始化解析器
+```c
+ArgParse *argParseInit(char *documentation);
+```
+- `documentation` 解析器的文档信息
+
+2. 添加命令
+```c
+Command *argParseAddCommand(ArgParse         *argParse,
+                            char             *name,
+                            char             *help,
+                            char             *default_val, 
+                            ArgParseCallback  callback,
+                            CommandGroup     *group,
+                            ArgParseValueType value_type);
+```
+- `argParse` 解析器
+- `name` 命令名称
+- `help` 命令帮助信息
+- `defaultVal` 默认值
+- `callback` 命令回调函数(可选)
+- `group` 命令组(可选)
+- `valueType` 命令参数类型
+
+3. 添加命令参数
+```c
+CommandArgs *argParseAddArg(Command          *command,
+                            char             *short_opt,
+                            char             *long_opt,
+                            char             *help,
+                            char             *default_val,
+                            ArgParseCallback  callback,
+                            bool              required,
+                            ArgParseValueType value_type);
+```
+- `command` 命令
+- `shortOpt` 短选项
+- `longOpt` 长选项
+- `help` 帮助信息
+- `defaultVal` 默认值
+- `callback` 回调函数(可选)
+- `required` 是否必须
+- `valueType` 参数类型
+
+4. 添加子命令
+```c
+Command *argParseAddSubCommand(Command          *Parent,
+                               char             *name,
+                               char             *help,
+                               char             *default_val,
+                               ArgParseCallback  callback,
+                               CommandGroup     *group,
+                               ArgParseValueType value_type);
+```
+- `Parent` 父命令
+- `name` 命令名称
+- `help` 命令帮助信息
+- `defaultVal` 默认值
+- `callback` 回调函数(可选)
+- `group` 命令组(可选)
+- `valueType` 命令参数类型
+
+5. 添加全局参数
+```c
+CommandArgs *argParseAddGlobalArg(ArgParse         *argParse,
+                                  char             *short_opt,
+                                  char             *long_opt,
+                                  char             *help,
+                                  char             *default_val,
+                                  ArgParseCallback  callback,
+                                  bool              required,
+                                  ArgParseValueType value_type);
+```
+- `argParse` 解析器
+- `shortOpt` 短选项
+- `longOpt` 长选项
+- `help` 帮助信息
+- `defaultVal` 默认值
+- `callback` 回调函数(可选)
+- `required` 是否必须
+- `valueType` 参数类型
+
+## 解析参数API
+1. 解析参数
+```c
+void argParseParse(ArgParse *argParse, int argc, char *argv[]);
+```
+- `argParse` 解析器
+- `argc` 参数个数
+- `argv` 参数列表
+
+2. 获取当前解析到的命令名字
+```c
+char *argParseGetCurCommandName(ArgParse *argParse);
+```
+- `argParse` 解析器
+> 注意，解析到的命令为最后一次出现的命令，也可能是子命令
+
+
+3. 获取当前命令的值
+```c
+char *argParseGetCurCommandValue(ArgParse *argParse);
+```
+- `argParse` 解析器
+> 注意，解析到的命令为最后一次出现的命令，也可能是子命令
+
+4. 获取当前命令的某个参数的值
+```c
+char *argParseGetCurArg(ArgParse *argParse, char *opt);
+```
+- `argParse` 解析器
+- `opt` 参数选项
+
+5. 获取当前命令的某个选项的值列表(当为多值类型时使用该函数)
+```c
+char **argParseGetCurArgList(ArgParse *argParse, char *opt, int *len);
+```
+- `argParse` 解析器
+- `opt` 参数选项
+- `len` 参数个数
+
+6. 获取全局选项的值
+```c
+char *argParseGetGlobalArg(ArgParse *argParse, char *opt);
+```
+- `argParse` 解析器
+- `opt` 参数选项
+
+7. 获取全局选项的值列表
+```c
+char **argParseGetGlobalArgList(ArgParse *argParse, char *opt, int *len);
+```
+- `argParse` 解析器
+- `opt` 参数选项
+- `len` 参数个数
+
+### 触发检测API
+1. 检测当前检测的命令的某个选项是否触发
+```c
+bool argParseCheckCurArgTriggered(ArgParse *argParse, char *opt);
+```
+- `argParse` 解析器
+- `opt` 参数选项
+
+
+2. 检测某个命令是否被触发
+```c
+bool argParseCheckCommandTriggered(ArgParse *argParse, char *command_name);
+```
+- `argParse` 解析器
+- `command_name` 命令名称
+
+3. 检测某个全局选项是否被触发
+```c
+bool argParseCheckGlobalTriggered(ArgParse *argParse, char *opt);
+```
+- `argParse` 解析器
+- `opt` 参数选项
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