diff --git a/experiment_data/sample_data/1.xlsx b/experiment_data/sample_data/1.xlsx
new file mode 100644
index 0000000..3c6ec53
Binary files /dev/null and b/experiment_data/sample_data/1.xlsx differ
diff --git a/experiment_data/sample_data/24-new.xlsx b/experiment_data/sample_data/24-new.xlsx
new file mode 100644
index 0000000..4f6eb27
Binary files /dev/null and b/experiment_data/sample_data/24-new.xlsx differ
diff --git a/src/data/pointcalculate.cpp b/src/data/pointcalculate.cpp
index f9e06ab..9f6a985 100644
--- a/src/data/pointcalculate.cpp
+++ b/src/data/pointcalculate.cpp
@@ -395,8 +395,13 @@ QPointF PointCalculate::getIntersection(const Line& line1, const Line& line2) {
 }
 QPointF PointCalculate::getClosestPointByX(const float targetX)
 {
-#if 1
     QPointF resultPointF;
+
+    if(targetX < _dataVtr.first().sampleTemp ||
+            targetX > _dataVtr.last().sampleTemp){
+        return resultPointF;
+    }
+
     float minDiff = std::numeric_limits<float>::max();
 
     for(Global::ExperimentData &ed:_dataVtr){
@@ -408,36 +413,6 @@ QPointF PointCalculate::getClosestPointByX(const float targetX)
     }
 
     return resultPointF;
-#endif
-
-#if 0
-    int left = 0;
-    int right = _dataVtr.size() - 1;
-
-    while (left < right) {
-        int mid = left + (right - left)/2;
-        const FileManager::ExperimentData& ed = _dataVtr.at(mid);
-        if(ed.sampleTemp > targetX){
-            right = mid;
-        }else{
-            left = mid + 1;
-        }
-    }
-
-    //
-    QPointF resultPointF(_dataVtr.at(left).sampleTemp,
-                         _dataVtr.at(left).dsc);
-
-    if(left > 0 &&
-            std::abs(resultPointF.x() - targetX) >
-            std::abs(_dataVtr.at(left - 1).sampleTemp - targetX)){
-        //
-        resultPointF = QPointF(_dataVtr.at(left - 1).sampleTemp,
-                               _dataVtr.at(left - 1).dsc);
-    }
-
-    return resultPointF;
-#endif
 }
 
 QString PointCalculate::textFormatNumbericalLabel(const QPointF point)
@@ -563,20 +538,20 @@ QVector<QPointF> PointCalculate::movingAveragePoint(const QVector<QPointF> &poin
     return result;
 #endif
     QVector<QPointF> result;
-       int n = points.size();
-       for (int i = 0; i < n; ++i) {
-           double sumY = 0.0;
-           int count = 0;
-           for (int j = std::max(0, i - windowSize / 2); j <= std::min(n - 1, i + windowSize / 2); ++j) {
-               sumY += points[j].y();
-               count++;
-           }
-           if (count > 0) {
-               double avgY = sumY / count;
-               result.append(QPointF(points[i].x(), avgY)); // 使用原始的 x 值
-           }
-       }
-       return result;
+    int n = points.size();
+    for (int i = 0; i < n; ++i) {
+        double sumY = 0.0;
+        int count = 0;
+        for (int j = std::max(0, i - windowSize / 2); j <= std::min(n - 1, i + windowSize / 2); ++j) {
+            sumY += points[j].y();
+            count++;
+        }
+        if (count > 0) {
+            double avgY = sumY / count;
+            result.append(QPointF(points[i].x(), avgY)); // 使用原始的 x 值
+        }
+    }
+    return result;
 }
 QVector<QPointF> PointCalculate::getNearbyPointGroupByX(const float targetX)
 {
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 01982a3..b0dd872 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -148,10 +148,10 @@ void MainWindow::connections()
 
     connect(_analysisSettingWidget,&AnalysisSettingForm::sigApply,
             _centralWidget,&CentralWidget::slotAnalysisSettingApply);
-    connect(_analysisSettingWidget,&AnalysisSettingForm::sigConfirm,
-            _centralWidget,&CentralWidget::slotAnalysisSettingConfirm);
     connect(_analysisSettingWidget,&AnalysisSettingForm::sigUndo,
             _centralWidget,&CentralWidget::slotAnalysisSettingUndo);
+    connect(_analysisSettingWidget,&AnalysisSettingForm::sigConfirm,
+            _centralWidget,&CentralWidget::slotAnalysisSettingConfirm);
     connect(_analysisSettingWidget,&AnalysisSettingForm::sigCancel,
             _centralWidget,&CentralWidget::slotAnalysisSettingCancel);
 
diff --git a/src/serialport/dataparser.cpp b/src/serialport/dataparser.cpp
index d1edb63..1609060 100644
--- a/src/serialport/dataparser.cpp
+++ b/src/serialport/dataparser.cpp
@@ -41,7 +41,9 @@ bool commonDataParser(const QByteArray &ba, CommonData &cd)
 
 QByteArray connectToDevice(const QVector<Phase> &vtr)
 {
-    const int phaseLength = sizeof(Phase);
+//    const int phaseLength = sizeof(Phase);
+    const int phaseLength = PHASE_BYTE_SIZE;
+
     const int phaseArrayLength = vtr.size() * phaseLength;
     char phaseArray[300] = {};
     int offset = 0;
@@ -86,7 +88,6 @@ QByteArray connectToDevice(const QVector<Phase> &vtr)
     memcpy(totalData + 6 + phaseArrayLength, (char *)&crc, sizeof(u16));
 
     //
-
     return QByteArray(totalData, 6 + phaseArrayLength + 2);
 }
 
diff --git a/src/serialport/protocol.h b/src/serialport/protocol.h
index f160ed8..3f1a0db 100644
--- a/src/serialport/protocol.h
+++ b/src/serialport/protocol.h
@@ -49,7 +49,7 @@ typedef struct control_data
     float cutoff_temp;
     float temp_flow;
     uint16_t constant_temp_time_min;
-    enum gas_type gas;
+    enum gas_type gas; // uint8_t
 }Phase;
 
 struct pid_data
diff --git a/src/serialport/serialport.cpp b/src/serialport/serialport.cpp
index 75b94d2..39c3083 100644
--- a/src/serialport/serialport.cpp
+++ b/src/serialport/serialport.cpp
@@ -98,7 +98,7 @@ void SerialPort::slotReadData()
     if(ba.size() == 0){
         return;
     }
-#if 0
+#if 1
     QString hexData = ba.toHex(' '); // ' ' 作为分隔符，可选参数
     qDebug() << "receive info (hex):" << hexData;
 #endif
diff --git a/src/ui/centralwidget.cpp b/src/ui/centralwidget.cpp
index ebe468d..f68dd77 100644
--- a/src/ui/centralwidget.cpp
+++ b/src/ui/centralwidget.cpp
@@ -14,7 +14,7 @@
 CentralWidget::CentralWidget(QWidget *parent)
     : QWidget(parent)
     ,_customPlot(new QCustomPlot(this))
-    ,_analysisMode(AnalysisMode::None)
+    ,_analysisMode(AnalysisMode::Null)
     ,_currentCurve(nullptr)
 {
     setMouseTracking(true);
@@ -91,17 +91,19 @@ CentralWidget::~CentralWidget()
 
 void CentralWidget::setAnalysisMode(const CentralWidget::AnalysisMode mode)
 {
-    _customPlot->setInteractions(QCP::iSelectPlottables);
-
     _analysisMode = mode;
 
     switch (mode)
     {
+    case AnalysisMode::Null:
+        _customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
+        break;
     case AnalysisMode::NumericalLabel:
     case AnalysisMode::StartPoint:
     case AnalysisMode::StopPoint:
     case AnalysisMode::PeakSynthesisAnalysis:
     case AnalysisMode::GlassTransition:
+        _customPlot->setInteractions(QCP::iSelectPlottables);
         setEventHandlerEnable(true);
         break;
     default:
@@ -158,13 +160,13 @@ void CentralWidget::slotRecvCommonData(const CommonData &cd)
     //    return;
 
     // Record data.
-    logde<<"record data...";
+//    logde<<"record data...";
 
     if(!Global::_currentCurveExperimentDataPtr){
         logde<<"_currentCurveExperimentDataPtr is nullptr.";
         exit(0);
     }else{
-        logde<<"add ed...";
+//        logde<<"add ed...";
 
         Global::ExperimentData ed;
         ed.dsc = cd .dsc;
@@ -173,9 +175,7 @@ void CentralWidget::slotRecvCommonData(const CommonData &cd)
         ed.constantTempTime = cd.add_constan_temp_time;
 
         Global::_currentCurveExperimentDataPtr->dataVtr.push_back(ed);
-        logde<<"111";
         Global::_currentCurveExperimentDataPtr->curve = _currentCurve;
-        logde<<"222";
     }
 
 #if 0
@@ -206,8 +206,6 @@ void CentralWidget::slotRecvAnalysisFileName(const QString &filePath)
 {
     qDebug() << "slotRecvAnalysisFileName" << filePath;
 
-    _customPlot->setInteractions(QCP::iSelectPlottables);
-
     // todo.禁止重复文件添加。
     Global::CurveFileData cfd;
     if(XlsxHandler::readFile(filePath,cfd) != 0){
@@ -343,7 +341,13 @@ void CentralWidget::slotAnalysisSettingApply()
 
         logde<<"lin1 x:"<<_line1->point1->coords().x();
 
-        drawText(selectPoint,PointCalculate::textFormatNumbericalLabel(selectPoint));
+        if(selectPoint.isNull()){
+            QMessageBox::warning((QWidget*)this->parent(), "warnning", "曲线选择错误.");
+            return;
+        }
+
+        drawText(selectPoint,
+                 PointCalculate::textFormatNumbericalLabel(selectPoint));
 
         break;
     }
@@ -409,7 +413,8 @@ void CentralWidget::slotAnalysisSettingApply()
 void CentralWidget::slotAnalysisSettingConfirm()
 {
     slotAnalysisSettingApply();
-    setAnalysisMode(CentralWidget::AnalysisMode::None);
+
+    setAnalysisMode(CentralWidget::AnalysisMode::Null);
 
     _line1->setVisible(false);
     _line2->setVisible(false);
@@ -425,7 +430,8 @@ void CentralWidget::slotAnalysisSettingUndo()
 void CentralWidget::slotAnalysisSettingCancel()
 {
     clearData(ClearDataMode::Undo);
-    setAnalysisMode(CentralWidget::AnalysisMode::None);
+
+    setAnalysisMode(CentralWidget::AnalysisMode::Null);
 
     _line1->setVisible(false);
     _line2->setVisible(false);
@@ -872,6 +878,7 @@ void CentralWidget::drawText(const QPointF point, const QString text)
 {
 
     QPointF textBoxPoint = getTheCoordinatesOfTheTextBox(point);
+
     // 创建标注文字（QCPItemText）
     QCPItemText *textLabel = new QCPItemText(_customPlot);
     textLabel->setPositionAlignment(Qt::AlignBottom | Qt::AlignHCenter);  // 对齐方式
diff --git a/src/ui/centralwidget.h b/src/ui/centralwidget.h
index d389433..dfe14d2 100644
--- a/src/ui/centralwidget.h
+++ b/src/ui/centralwidget.h
@@ -16,7 +16,7 @@ class CentralWidget:public QWidget
     Q_OBJECT
 public:
     enum AnalysisMode{
-        None,
+        Null,
         NumericalLabel,
         StartPoint,
         StopPoint,
diff --git a/src/ui/experimentsettingform.cpp b/src/ui/experimentsettingform.cpp
index f7fa538..eba777c 100644
--- a/src/ui/experimentsettingform.cpp
+++ b/src/ui/experimentsettingform.cpp
@@ -7,6 +7,7 @@
 #include "serialport.h"
 #include "global.h"
 #include "filemanager.h"
+#include "logger.h"
 
 QString extractObjectName(const QString& fullObjectName) {
     return fullObjectName.mid(4);  // 去掉前 4 个字符（"ui->"）
@@ -47,9 +48,8 @@ ExperimentSettingForm::~ExperimentSettingForm()
 void ExperimentSettingForm::uiReset()
 {
     // init data and status.
-    ui->checkBox_phase_1->setChecked(true);
-    ui->checkBox_phase_1->setEnabled(false);
 
+    // default value
     ui->phase_1_cutoff_temp->setText("0");
     ui->phase_2_cutoff_temp->setText("0");
     ui->phase_3_cutoff_temp->setText("0");
@@ -70,7 +70,18 @@ void ExperimentSettingForm::uiReset()
     ui->phase_4_constant_temp->setText("0");
     ui->phase_5_constant_temp->setText("0");
     ui->phase_6_constant_temp->setText("0");
-    //
+
+    ui->comboBox_phase_1_atmosphere->setCurrentIndex(0);
+    ui->comboBox_phase_2_atmosphere->setCurrentIndex(0);
+    ui->comboBox_phase_3_atmosphere->setCurrentIndex(0);
+    ui->comboBox_phase_4_atmosphere->setCurrentIndex(0);
+    ui->comboBox_phase_5_atmosphere->setCurrentIndex(0);
+    ui->comboBox_phase_6_atmosphere->setCurrentIndex(0);
+
+    // default enable
+    ui->checkBox_phase_1->setChecked(true);
+    ui->checkBox_phase_1->setEnabled(false);
+
     ui->phase_2_cutoff_temp->setEnabled(false);
     ui->phase_3_cutoff_temp->setEnabled(false);
     ui->phase_4_cutoff_temp->setEnabled(false);
@@ -330,10 +341,9 @@ void ExperimentSettingForm::slotPhase6StateChanged(int state)
 void ExperimentSettingForm::on_pushButton_deliverData_clicked()
 {
     QVector<Phase> phaseVtr;
-    if (ui->checkBox_phase_1->checkState())
     {
         Phase phase;
-        phase.onoff = 1;
+        phase.onoff = ui->checkBox_phase_1->checkState()?1:0;
         phase.cutoff_temp = ui->phase_1_cutoff_temp->text().toFloat();
         phase.temp_flow = ui->phase_1_scan_rate->text().toFloat();
         phase.constant_temp_time_min = (uint16_t)ui->phase_1_constant_temp->text().toInt();
@@ -342,10 +352,9 @@ void ExperimentSettingForm::on_pushButton_deliverData_clicked()
 
         phaseVtr.push_back(phase);
     }
-    if (ui->checkBox_phase_2->checkState())
     {
         Phase phase;
-        phase.onoff = 1;
+        phase.onoff = ui->checkBox_phase_2->checkState()?1:0;
         phase.cutoff_temp = ui->phase_2_cutoff_temp->text().toFloat();
         phase.temp_flow = ui->phase_2_scan_rate->text().toFloat();
         phase.constant_temp_time_min = (uint16_t)ui->phase_2_constant_temp->text().toInt();
@@ -355,10 +364,9 @@ void ExperimentSettingForm::on_pushButton_deliverData_clicked()
         phaseVtr.push_back(phase);
     }
 
-    if (ui->checkBox_phase_3->checkState())
     {
         Phase phase;
-        phase.onoff = 1;
+        phase.onoff = ui->checkBox_phase_3->checkState()?1:0;
         phase.cutoff_temp = ui->phase_3_cutoff_temp->text().toFloat();
         phase.temp_flow = ui->phase_3_scan_rate->text().toFloat();
         phase.constant_temp_time_min = (uint16_t)ui->phase_3_constant_temp->text().toInt();
@@ -366,22 +374,21 @@ void ExperimentSettingForm::on_pushButton_deliverData_clicked()
 
         phaseVtr.push_back(phase);
     }
-    if (ui->checkBox_phase_4->checkState())
+
     {
         Phase phase;
-        phase.onoff = 1;
+        phase.onoff = ui->checkBox_phase_4->checkState()?1:0;
         phase.cutoff_temp = ui->phase_4_cutoff_temp->text().toFloat();
         phase.temp_flow = ui->phase_4_scan_rate->text().toFloat();
         phase.constant_temp_time_min = (uint16_t)ui->phase_4_constant_temp->text().toInt();
         //        phase.gas = ui->comboBox_phase_1_atmosphere->currentIndex();
         phase.gas = GasType::N2;
-
         phaseVtr.push_back(phase);
     }
-    if (ui->checkBox_phase_5->checkState())
+
     {
         Phase phase;
-        phase.onoff = 1;
+        phase.onoff = ui->checkBox_phase_5->checkState()?1:0;
         phase.cutoff_temp = ui->phase_5_cutoff_temp->text().toFloat();
         phase.temp_flow = ui->phase_5_scan_rate->text().toFloat();
         phase.constant_temp_time_min = (uint16_t)ui->phase_5_constant_temp->text().toInt();
@@ -390,10 +397,10 @@ void ExperimentSettingForm::on_pushButton_deliverData_clicked()
 
         phaseVtr.push_back(phase);
     }
-    if (ui->checkBox_phase_6->checkState())
+
     {
         Phase phase;
-        phase.onoff = 1;
+        phase.onoff = ui->checkBox_phase_6->checkState()?1:0;
         phase.cutoff_temp = ui->phase_6_cutoff_temp->text().toFloat();
         phase.temp_flow = ui->phase_6_scan_rate->text().toFloat();
         phase.constant_temp_time_min = (uint16_t)ui->phase_6_constant_temp->text().toInt();
@@ -486,20 +493,107 @@ void ExperimentSettingForm::slotPhaseCheck()
 
 void ExperimentSettingForm::slotRecvPhaseInfo(const QByteArray &ba)
 {
+    logde<<"-----------------------";
+    QString hexData = ba.toHex(' '); // ' ' 作为分隔符，可选参数
+    qDebug() << "slotRecvPhaseInfo hex:" << hexData;
+
     QByteArray localba = ba;
     SerialPortProtocol *spp = (SerialPortProtocol *)localba.data();
 
     u8 *data = spp->data_buf;
 
+    int phaseSize = spp->len / PHASE_BYTE_SIZE;
+
     QVector<Phase> phaseVtr;
-    for (int i = 0; i < 6; i++)
+    for (int i = 0; i < phaseSize; i++)
     {
+#if 0
         Phase *phase = (Phase *)(data + i * PHASE_BYTE_SIZE);
         phaseVtr.push_back(*phase);
+#endif
+#if 0
+        u8* localData = data + i * PHASE_BYTE_SIZE;
+        int index = 0;
+
+        Phase phase;
+        phase.onoff         = *(localData + index);
+        index += 1;
+
+        phase.cutoff_temp   = (float)*(localData + index);
+        index += 4;
+
+        phase.temp_flow     = (float)*(localData + index);
+        index += 4;
+
+        phase.constant_temp_time_min = (u16)*(localData + index);
+        index += 2;
+
+        //        phase.gas = (int)*(localData + index);
+        int gasType= (u8)*(localData + index);
+
+        switch(gasType){
+        case GasType::NC:
+            phase.gas = GasType::NC;
+            break;
+        case GasType::N2:
+            phase.gas = GasType::N2;
+            break;
+        case GasType::O2:
+            phase.gas = GasType::O2;
+            break;
+        default:
+            break;
+        }
+
+        phaseVtr.push_back(phase);
+#endif
+        uint8_t* localData = data + i * PHASE_BYTE_SIZE;
+        int index = 0;
+
+        Phase phase;
+        // 解析 onoff
+        //        phase.onoff = *(localData + index);
+        memcpy(&phase.onoff, localData + index, sizeof(uint8_t));
+        index += sizeof(uint8_t);
+
+        // 解析 cutoff_temp
+        memcpy(&phase.cutoff_temp, localData + index, sizeof(float));
+        index += sizeof(float);
+
+        // 解析 temp_flow
+        memcpy(&phase.temp_flow, localData + index, sizeof(float));
+        index += sizeof(float);
+
+        // 解析 constant_temp_time_min
+        memcpy(&phase.constant_temp_time_min, localData + index, sizeof(uint16_t));
+        index += sizeof(uint16_t);
+
+        // 解析 gas
+        uint8_t gasType = *(localData + index);
+        switch (gasType) {
+        case NC:
+            phase.gas = NC;
+            break;
+        case N2:
+            phase.gas = N2;
+            break;
+        case O2:
+            phase.gas = O2;
+            break;
+        default:
+            phase.gas = NC; // 默认值，表示未知类型
+            break;
+        }
+        phaseVtr.push_back(phase);
     }
+
     Global::_experimentInfo.phaseVtr = phaseVtr;
 
     //ui update
+//    logde<<"phaseVtr size:"<<phaseVtr.size();
+
+    uiReset();
+
     for(int i = 0; i< phaseVtr.size();){
         const Phase &phase = phaseVtr[i];
         if(phase.onoff == 0){
@@ -507,15 +601,15 @@ void ExperimentSettingForm::slotRecvPhaseInfo(const QByteArray &ba)
         }
 
         i++;
-        qDebug()<<"index :"<<i;
+//        qDebug()<<"index :"<<i;
 
         QString checkBoxName = QString("checkBox_phase_%1").arg(i);
         QCheckBox *checkBox_phase = qobject_cast<QCheckBox*>(this->findChild<QObject*>(checkBoxName));
         if (checkBox_phase) {
             checkBox_phase->setChecked(true);
-            qDebug()<<"found...";
+//            qDebug()<<"found...";
         }else{
-            qDebug()<<"not found...";
+//            qDebug()<<"not found...";
         }
 
         QString cutOffTempLineEditName = QString("phase_%1_cutoff_temp").arg(i);
diff --git a/src/ui/leftwidget.h b/src/ui/leftwidget.h
index 7603e21..cee0537 100644
--- a/src/ui/leftwidget.h
+++ b/src/ui/leftwidget.h
@@ -20,7 +20,6 @@ private:
     void initFileName(QTreeWidgetItem*,const QString &folderPath);
     void expandAll(QTreeWidgetItem* item);
     void clearAllChildItems(QTreeWidgetItem* parentItem);
-protected:
 private slots:
     void slotTreeWidgetItemClicked(QTreeWidgetItem *item, int column);
 private: