diff --git a/src/tcp_service.cpp b/src/tcp_service.cpp
index 4945ba5..6f91b7e 100644
--- a/src/tcp_service.cpp
+++ b/src/tcp_service.cpp
@@ -19,7 +19,7 @@
 
 void TcpService::process_messages() {
     while (true) {
-        std::vector<char> command = g_messageQueue.dequeue();
+        std::vector<uint8_t> command = g_messageQueue.dequeue();
         handle_data_packet(command);
     }
 }
@@ -44,19 +44,19 @@
     init_serial_port(port_name, baud_rate);
 }
 
-void TcpService::handle_data_packet(std::vector<char> &data) {
-    for (const char i: data) {
+void TcpService::handle_data_packet(std::vector<uint8_t> &data) {
+    for (const uint8_t i: data) {
         std::cout << std::hex
                 << std::uppercase
                 << std::setw(2)
                 << std::setfill('0')
-                << static_cast<int>(static_cast<unsigned char>(i))
+                << static_cast<int>(static_cast<uint8_t>(i))
                 << " ";
     }
     std::cout << std::endl;
 
     //转为std::vector<uint8_t>并发给机械臂串口
-    std::vector<uint8_t> command(data.begin(), data.end());
+    std::vector command(data.begin(), data.end());
     const size_t bytes_to_send = command.size();
     if (bytes_to_send == 0) {
         std::cout << "Empty command, nothing to send." << std::endl;
@@ -76,7 +76,7 @@
 }
 
 void TcpService::handle_client(const int client_socket) {
-    std::vector<char> buffer;
+    std::vector<uint8_t> buffer;
     char byte;
     while (true) {
         const ssize_t bytes_received = recv(client_socket, &byte, 1, 0);
@@ -94,7 +94,7 @@
 
         buffer.push_back(byte);
 
-        if (static_cast<unsigned char>(byte) == 0xFA) {
+        if (static_cast<uint8_t>(byte) == 0xFA) {
             // 处理接收到的数据包
             if (!buffer.empty()) {
                 handle_data_packet(buffer);

diff --git a/src/tcp_service.cpp b/src/tcp_service.cpp
index 4945ba5..6f91b7e 100644
--- a/src/tcp_service.cpp
+++ b/src/tcp_service.cpp
@@ -19,7 +19,7 @@
 
 void TcpService::process_messages() {
     while (true) {
-        std::vector<char> command = g_messageQueue.dequeue();
+        std::vector<uint8_t> command = g_messageQueue.dequeue();
         handle_data_packet(command);
     }
 }
@@ -44,19 +44,19 @@
     init_serial_port(port_name, baud_rate);
 }
 
-void TcpService::handle_data_packet(std::vector<char> &data) {
-    for (const char i: data) {
+void TcpService::handle_data_packet(std::vector<uint8_t> &data) {
+    for (const uint8_t i: data) {
         std::cout << std::hex
                 << std::uppercase
                 << std::setw(2)
                 << std::setfill('0')
-                << static_cast<int>(static_cast<unsigned char>(i))
+                << static_cast<int>(static_cast<uint8_t>(i))
                 << " ";
     }
     std::cout << std::endl;
 
     //转为std::vector<uint8_t>并发给机械臂串口
-    std::vector<uint8_t> command(data.begin(), data.end());
+    std::vector command(data.begin(), data.end());
     const size_t bytes_to_send = command.size();
     if (bytes_to_send == 0) {
         std::cout << "Empty command, nothing to send." << std::endl;
@@ -76,7 +76,7 @@
 }
 
 void TcpService::handle_client(const int client_socket) {
-    std::vector<char> buffer;
+    std::vector<uint8_t> buffer;
     char byte;
     while (true) {
         const ssize_t bytes_received = recv(client_socket, &byte, 1, 0);
@@ -94,7 +94,7 @@
 
         buffer.push_back(byte);
 
-        if (static_cast<unsigned char>(byte) == 0xFA) {
+        if (static_cast<uint8_t>(byte) == 0xFA) {
             // 处理接收到的数据包
             if (!buffer.empty()) {
                 handle_data_packet(buffer);
diff --git a/src/tcp_service.hpp b/src/tcp_service.hpp
index 19429ea..c03bc7b 100644
--- a/src/tcp_service.hpp
+++ b/src/tcp_service.hpp
@@ -23,7 +23,7 @@
     boost::asio::io_context &_context;
     boost::asio::serial_port _port;
 
-    void handle_data_packet(std::vector<char> &data);
+    void handle_data_packet(std::vector<uint8_t> &data);
 
     void handle_client(int client_socket);