diff --git a/Cigarette/common.h b/Cigarette/common.h
index 0b85862..82918fa 100644
--- a/Cigarette/common.h
+++ b/Cigarette/common.h
@@ -8,6 +8,7 @@
 //#define __DEBUG          //debug信息输出功能
 //#define __UDPSend          //网络发送功能
 //#define __TCPSend			// TCP发送
+//#define __TCPServer			// TCP服务器
 #define __ExportData        // FTP发送
 #define USB_BASLER_NEW_FW  //使用basler定制固件
 //#define IMM_PROCESS        //拍照后立马处理，不等校验信号
diff --git a/Cigarette/main.cpp b/Cigarette/main.cpp
index 72dd525..fd8d15f 100644
--- a/Cigarette/main.cpp
+++ b/Cigarette/main.cpp
@@ -2,6 +2,8 @@
 #include <QtWidgets/QApplication>
 #include <QPixmap>
 #include <QSplashScreen>
+#include <Windows.h>
+#include <qmessagebox.h>
 #if defined LICENSE_VERIFY
 #pragma comment(lib,"CryptoToolLib.lib")
 #include "CryptoToolLib.h"
@@ -9,6 +11,18 @@
 
 int main(int argc, char* argv[])
 {
+    QApplication a(argc, argv);
+    HANDLE hMutex = NULL;
+
+    hMutex = CreateMutex(nullptr, TRUE, L"CigratteShanghai");
+    if ((GetLastError() == ERROR_ALREADY_EXISTS) || (hMutex == NULL)) {
+        QMessageBox::warning(nullptr, "Error", "An instance of the application is already running.");
+        CloseHandle(hMutex);
+        hMutex = NULL;
+        a.closeAllWindows();
+        return 0;
+    }
+
 #if defined LICENSE_VERIFY
     if (!VerifyLicense())
     {
@@ -16,7 +30,6 @@ int main(int argc, char* argv[])
     }
 #endif
     qRegisterMetaType<cv::Mat>("cv::Mat");
-    QApplication a(argc, argv);
     QPixmap pixmap("D:/Release/splash.jpg");
     QSplashScreen splash(pixmap);
     splash.show();
@@ -25,5 +38,12 @@ int main(int argc, char* argv[])
     w.show();
     //w.showFullScreen();
     splash.finish(&w);
-    return a.exec();
+    a.exec();
+
+    if (hMutex != NULL) {
+        CloseHandle (hMutex);
+        hMutex = NULL;
+    }
+
+    return 0;
 }
diff --git a/Cigarette/threadSendTCP.cpp b/Cigarette/threadSendTCP.cpp
index 6d26f8a..26130e1 100644
--- a/Cigarette/threadSendTCP.cpp
+++ b/Cigarette/threadSendTCP.cpp
@@ -11,6 +11,13 @@ void threadSendTCP::init(SyncQueue<_TCPSendInfo>* p_TCP_Info_queue, std::string
     qDebug() << "tcp ip:" << ip << "| tcp port:" << port;
     Local_TCP_Info_queue = p_TCP_Info_queue;
 
+#ifdef __TCPServer
+    tcpServer = new QTcpServer(this);
+	tcpServer->listen(QHostAddress::Any, port);// Equivalent to QHostAddress("127.0.0.1").
+    connect(tcpServer,SIGNAL(newConnection()),this,SLOT(onNewConnection()));
+	connect(mySocket, SIGNAL(connected()), this, SLOT(onClientConnected()));
+	connect(mySocket, SIGNAL(disconnected()), this, SLOT(onClientDisconnected()));
+#endif
 
 }
 void threadSendTCP::start_work()
@@ -21,13 +28,21 @@ void threadSendTCP::start_work()
 
 void threadSendTCP::stop()
 {
+#ifdef __TCPServer
+	if (tcpServer->isListening())
+		tcpServer->close();
+	if(tcpServer) delete tcpServer;
+#endif
     isLoop = false;
     // wait();
-    delete mySocket;
+	mySocket->deleteLater();
+	if (mySocket) delete mySocket;
 }
 
+#ifndef __TCPServer
 bool threadSendTCP::connectTCP() {
     mySocket = new QTcpSocket();
+    //mySocket = new QTcpServer();
     // 取消已有的连接
     mySocket->abort();
     // 连接服务器
@@ -39,26 +54,61 @@ bool threadSendTCP::connectTCP() {
     qDebug() << "connect successfully!";
     return true;
 }
+#endif
+
 void threadSendTCP::run()
 {
+#ifndef __TCPServer
     if (!connectTCP())
     {
         qDebug() << "TCP connect error!";
     }
+#endif
     while (isLoop) {
         _TCPSendInfo TCPSendInfo;
         Local_TCP_Info_queue->take(TCPSendInfo);
         num++;
-        sendData(&TCPSendInfo, num);
+#ifdef __TCPServer
+		if (ClientStatus == QAbstractSocket::ConnectedState)
+		{
+			sendData(&TCPSendInfo, num);
+		}
+#else
+		sendData(&TCPSendInfo, num);
+#endif
       //mySocket->write("Hello! here is tcp client!\n");
       //mySocket->flush();
     }
 }
 
 void threadSendTCP::sendData(_TCPSendInfo* TCPSendInfo, int Num) {
-    std::string fileName = TCPSendInfo->pics_name + ", " + QString::number(Num).toStdString();
-    mySocket->write(fileName.c_str());
-    mySocket->write("\n");
+    //std::string fileName = TCPSendInfo->pics_name + ", " + QString::number(Num).toStdString();
+	//mySocket->write(fileName.c_str());
+	char temp = num % 10;
+    mySocket->write((char*)&temp,sizeof(char));
+    //mySocket->write("\n");
     mySocket->flush();
 }
 
+#ifdef __TCPServer
+void threadSendTCP::onNewConnection()
+{
+    mySocket = tcpServer->nextPendingConnection(); //创建socket
+	qDebug() << "NewConnectionConnected";
+	ClientStatus = QAbstractSocket::ConnectedState;
+    
+}
+
+void threadSendTCP::onClientConnected()
+{
+    
+    qDebug() << "ClientConnected";
+}
+
+void threadSendTCP::onClientDisconnected()
+{
+    ClientStatus = QAbstractSocket::UnconnectedState;
+    qDebug() << "ClientDisconnected";
+	mySocket->deleteLater();
+}
+#endif
\ No newline at end of file
diff --git a/Cigarette/threadSendTCP.h b/Cigarette/threadSendTCP.h
index 559689e..adcbf17 100644
--- a/Cigarette/threadSendTCP.h
+++ b/Cigarette/threadSendTCP.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <QWidget>
 #include <QDebug>
 #include <QDateTime>
 #include <iostream>
@@ -6,6 +7,7 @@
 #include <qtcpsocket.h>
 #include "common.h"
 #include "SyncQueue.h"
+#include <QTcpServer>
 
 class _TCPSendInfo
 {
@@ -43,8 +45,9 @@ public:
         wait();
     }
     void stop();
+#ifndef __TCPServer
     bool connectTCP();
-
+#endif
 protected:
     void run();
 
@@ -52,10 +55,18 @@ public:
     void init(SyncQueue<_TCPSendInfo>* p_TCP_Info_queue, std::string ip_, int port_);
     void start_work();
     void sendData(_TCPSendInfo* TCPSendInfo, int Num);
-
+#ifdef __TCPServer
+private slots:
+    void    onNewConnection();
+    void    onClientConnected();
+    void    onClientDisconnected();
+#endif
 public:
     SyncQueue<_TCPSendInfo>* Local_TCP_Info_queue;
     std::atomic_bool isLoop = { 0 };
-    QTcpSocket* mySocket;
-
+    QTcpSocket* mySocket = NULL;
+#ifdef __TCPServer
+    QTcpServer *tcpServer = NULL;
+    QAbstractSocket::SocketState ClientStatus;
+#endif
 };