diff --git a/module/mifare.cpp b/module/mifare.cpp
index 1817ad3..912e599 100644
--- a/module/mifare.cpp
+++ b/module/mifare.cpp
@@ -570,6 +570,17 @@ void Mifare::simulate()
         ui->funcTab->setCurrentIndex(1);
 }
 
+void Mifare::loadSniff(const QString& file)
+{
+    util->execCMD("hf list mf -l " + file);
+    ui->funcTab->setCurrentIndex(1);
+}
+
+void Mifare::saveSniff(const QString& file)
+{
+    util->execCMD("hf list mf -s " + file);
+    ui->funcTab->setCurrentIndex(1);
+}
 
 void Mifare::data_syncWithDataWidget(bool syncAll, int block)
 {
diff --git a/module/mifare.h b/module/mifare.h
index 72c2c87..4d804b6 100644
--- a/module/mifare.h
+++ b/module/mifare.h
@@ -110,6 +110,8 @@ public:
     void readAllE();
     void wipeE();
     void simulate();
+    void loadSniff(const QString& file);
+    void saveSniff(const QString& file);
 public slots:
 signals:
 
diff --git a/ui/mainwindow.cpp b/ui/mainwindow.cpp
index 21ec486..a396480 100644
--- a/ui/mainwindow.cpp
+++ b/ui/mainwindow.cpp
@@ -7,7 +7,7 @@ MainWindow::MainWindow(QWidget *parent):
 {
     ui->setupUi(this);
 //    ui->MF_simGroupBox->setVisible(false); // developing...
-    ui->MF_sniffGroupBox->setVisible(false); // developing...
+//    ui->MF_sniffGroupBox->setVisible(false); // developing...
     myInfo = new QAction("wh201906", this);
     connect(myInfo, &QAction::triggered, [ = ]()
     {
@@ -678,3 +678,46 @@ void MainWindow::on_MF_Sim_simButton_clicked()
 {
     mifare->simulate();
 }
+
+void MainWindow::on_MF_Sniff_loadButton_clicked() // use a tmp file to support complicated path
+{
+    QString title = "";
+    QString filename = "";
+
+    title = tr("Plz select the trace file:");
+    filename = QFileDialog::getOpenFileName(this, title, "./", tr("Trace Files(*.trc);;All Files(*.*)"));
+    qDebug() << filename;
+    if(filename != "")
+    {
+        QString tmpFile = "tmp" + QString::number(QDateTime::currentDateTime().toTime_t()) + ".trc";
+        if(QFile::copy(filename, "./" + tmpFile))
+        {
+            mifare->loadSniff(tmpFile);
+            QFile::remove("./" + tmpFile);
+        }
+        else
+        {
+            QMessageBox::information(this, tr("Info"), tr("Failed to open") + "\n" + filename);
+        }
+    }
+}
+
+void MainWindow::on_MF_Sniff_saveButton_clicked()
+{
+    QString title = "";
+    QString filename = "";
+
+    title = tr("Plz select the location to save trace file:");
+    filename = QFileDialog::getSaveFileName(this, title, "./", tr("Trace Files(*.trc)"));
+    qDebug() << filename;
+    if(filename != "")
+    {
+        QString tmpFile = "tmp" + QString::number(QDateTime::currentDateTime().toTime_t()) + ".trc";
+        mifare->saveSniff(tmpFile);
+        if(!QFile::copy("./" + tmpFile, filename))
+        {
+            QMessageBox::information(this, tr("Info"), tr("Failed to save to") + "\n" + filename);
+        }
+    }
+
+}
diff --git a/ui/mainwindow.h b/ui/mainwindow.h
index cc3928b..087fc5d 100644
--- a/ui/mainwindow.h
+++ b/ui/mainwindow.h
@@ -128,6 +128,10 @@ private slots:
 
     void on_MF_Sim_simButton_clicked();
 
+    void on_MF_Sniff_loadButton_clicked();
+
+    void on_MF_Sniff_saveButton_clicked();
+
 private:
     Ui::MainWindow* ui;
     QButtonGroup* typeBtnGroup;