diff --git a/Modbus/include/modbus_master.h b/Modbus/include/modbus_master.h
new file mode 100644
index 0000000..9765419
--- /dev/null
+++ b/Modbus/include/modbus_master.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include <QObject>
+
+/**
+ * 实现Modbus主站的所有方法
+ */
+class Modbus_Master  : public QObject
+{
+	Q_OBJECT
+
+public:
+	Modbus_Master(QObject *parent);
+	~Modbus_Master();
+
+
+	// 构建Modbus RTU数据包
+	QByteArray build_modbus_pkg(
+		quint8 slave_addr,
+		quint8 func_code,
+		const QByteArray& work_data
+	);
+
+	// 解析Modbus RTU数据包
+	bool parse_modbus_pkg(
+		const QByteArray& pkg,
+		quint8& slave_addr,
+		quint8& func_code,
+		QByteArray& work_data
+	);
+
+private:
+	// 私有方法
+	// 计算Modbus CRC16
+	quint16 calc_crc(const QByteArray& frame_data) const;
+
+	// 私有变量
+	const QByteArray frame;
+	quint8 slave_addr;
+	quint8 func_code;
+	QByteArray work_data;
+};
+
diff --git a/Modbus/include/modbus_msg.h b/Modbus/include/modbus_msg.h
new file mode 100644
index 0000000..36c28a9
--- /dev/null
+++ b/Modbus/include/modbus_msg.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <QObject>
+
+
+/**
+ * 实现消息日志和错误日志的记录导出和存储
+ */
+class Modbus_Msg : public QObject
+{
+	Q_OBJECT
+
+public:
+	Modbus_Msg(QObject *parent);
+	~Modbus_Msg();
+};
+
diff --git a/Modbus/src/modbus_master.cpp b/Modbus/src/modbus_master.cpp
new file mode 100644
index 0000000..f958996
--- /dev/null
+++ b/Modbus/src/modbus_master.cpp
@@ -0,0 +1,98 @@
+#include "../include/modbus_master.h"
+
+Modbus_Master::Modbus_Master(QObject *parent)
+	: QObject(parent)
+{
+
+}
+
+Modbus_Master::~Modbus_Master()
+{
+
+}
+
+QByteArray Modbus_Master::build_modbus_pkg(quint8 slave_addr, quint8 func_code, const QByteArray & work_data)
+{
+    QByteArray pkg;
+
+    try {
+        // 添加设备地址
+        pkg.append(slave_addr);
+        // 添加功能码
+        pkg.append(func_code);
+        // 添加工作数据
+        pkg.append(work_data);
+
+        // 计算CRC
+        quint16 crc = calc_crc(pkg);
+
+        // 添加CRC，小端序
+        // 低字节
+        pkg.append(static_cast<quint8>(crc & 0xFF));
+        // 高字节
+        pkg.append(static_cast<quint8>((crc >> 8) & 0xFF));
+    }
+    catch (const std::exception& ex) {
+        // TODO:抛出异常
+
+
+    }
+
+    return pkg;
+}
+
+bool Modbus_Master::parse_modbus_pkg(const QByteArray& pkg, quint8& slave_addr, quint8& func_code, QByteArray& work_data)
+{
+    // 检查数据包长度
+    if (pkg.size() < 4)
+    {
+        // TODO:抛出异常
+
+        return false;
+    }
+
+    // 提取设备地址
+    slave_addr = pkg[0];
+    // 提取功能码
+    func_code = pkg[1];
+    // 提取工作数据
+    work_data.clear();
+    if (pkg.size() > 4)
+    {
+        work_data = pkg.mid(2, pkg.size() - 4);
+    }
+    // 提取数据包自带的CRC
+    quint16 crc_bring = static_cast<quint16>(pkg[pkg.size() - 2]) |
+        (static_cast<quint16>(pkg[pkg.size() - 1]) << 8);
+    // 计算接收数据CRC
+    QByteArray pkg_data = pkg.mid(0, pkg.size() - 2);
+    quint16 crc_after_calc = calc_crc(pkg_data);
+    // CRC校验
+    if (crc_after_calc != crc_bring)
+    {
+        // TODO:抛出异常
+
+        return false;
+    }
+
+    return true;
+}
+
+quint16 Modbus_Master::calc_crc(const QByteArray& pkg_data) const
+{
+    static const quint16 crcTable[] = {
+    0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
+    0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
+    0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
+    0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841
+    };
+
+    quint16 crc = 0xFFFF;
+    for (int i = 0; i < pkg_data.size(); ++i) {
+        crc ^= static_cast<quint16>(pkg_data[i]);
+        crc = (crc >> 8) ^ crcTable[crc & 0x0F];
+        crc = (crc >> 8) ^ crcTable[crc & 0x0F];
+    }
+    return crc;
+}
+
diff --git a/Modbus/src/modbus_msg.cpp b/Modbus/src/modbus_msg.cpp
new file mode 100644
index 0000000..3df7a97
--- /dev/null
+++ b/Modbus/src/modbus_msg.cpp
@@ -0,0 +1,13 @@
+#include "../include/modbus_log.h"
+
+Modbus_Log::Modbus_Log(QObject *parent)
+	: QObject(parent)
+{
+
+}
+
+Modbus_Log::~Modbus_Log()
+{
+
+}
+