diff --git a/.gitignore b/.gitignore
index a7ac0f8..eaac8ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,11 @@
+# 项目的构建文件夹
 build/
+
+# VSCode的配置文件夹
 .vscode/
-.idea/
\ No newline at end of file
+
+# CLion的配置文件夹
+.idea/
+
+# draw.io的缓存文件
+*.bkp
\ No newline at end of file
diff --git a/docs/概要设计书/auto_pilot_bus.drawio b/docs/概要设计书/auto_pilot_bus.drawio
new file mode 100644
index 0000000..20f548a
--- /dev/null
+++ b/docs/概要设计书/auto_pilot_bus.drawio
@@ -0,0 +1 @@
+<mxfile host="Electron" modified="2022-05-12T07:28:58.662Z" agent="5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/18.0.1 Chrome/100.0.4896.143 Electron/18.2.0 Safari/537.36" etag="Ik_97Cbde92uuiPKVPvS" version="18.0.1" type="device"><diagram id="bu9w77FjTZBGwHDWVuck" name="第 1 页">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</diagram></mxfile>
\ No newline at end of file
diff --git a/docs/概要设计书/模块结构图.png b/docs/概要设计书/模块结构图.png
new file mode 100644
index 0000000..53c6405
Binary files /dev/null and b/docs/概要设计书/模块结构图.png differ
diff --git a/include/bus_io.h b/include/bus_io.h
index 8bac72d..a140e72 100644
--- a/include/bus_io.h
+++ b/include/bus_io.h
@@ -35,18 +35,15 @@ rail_node_t* ReadConfigFile();
 
 /**
  * 读取标准输入流中的输入
- * @param up_queries 上车的请求队列
- * @param down_queries 下车的请求队列
+ * @param inputString 输入的字符串
  * @return 当前读取的状态
  */
-read_state_t ReadInput(up_bus_t* up_queries, down_bus_t* down_queries);
+read_state_t ReadInput(char* inputString);
 
 /**
  * 打印当前的状态
- * @param up_queries 上车的请求队列
- * @param down_queries 下车的请求队列
  * @param rails 轨道链表
  */
-void PrintState(up_bus_t* up_queries, down_bus_t* down_queries, rail_node_t* rails);
+void PrintState();
 
 #endif //AUTO_PILOT_BUS_BUS_IO_H
diff --git a/include/query.h b/include/query.h
index bc1c6da..68c1c91 100644
--- a/include/query.h
+++ b/include/query.h
@@ -43,7 +43,14 @@ typedef struct up_bus up_bus_t;
  */
 typedef struct down_bus down_bus_t;
 
+/**
+ * 全局的上车请求链表头节点地址，也就是当前未处理的首个请求
+ */
 extern up_bus_t *up_queries;
+
+/**
+ * 全局的下车请求链表头节点地址，也就是当前未处理的首个请求
+ */
 extern down_bus_t *down_queries;
 
 /**
diff --git a/include/rail.h b/include/rail.h
index 02f237d..8f98f75 100644
--- a/include/rail.h
+++ b/include/rail.h
@@ -29,6 +29,9 @@ struct {
  */
 typedef struct rail_node rail_node_t;
 
+/**
+ * 全局的轨道链表头节点，也就是第一个公交站
+ */
 extern rail_node_t* rails;
 
 /**
diff --git a/test/io_test.cpp b/test/io_test.cpp
index 77a01a1..e9d404d 100644
--- a/test/io_test.cpp
+++ b/test/io_test.cpp
@@ -3,10 +3,15 @@
 //
 #include "gtest/gtest.h"
 #include "gmock/gmock.h"
+// 在C++中引用C语言中的函数
+#ifdef __cplusplus
 extern "C"
 {
+#endif
 #include "rail.h"
+#ifdef __cplusplus
 }
+#endif
 
 using ::testing::Return;
 using ::testing::AtLeast;