diff --git a/src/data/xlsxhandler.cpp b/src/data/xlsxhandler.cpp
index f211818..5d52585 100644
--- a/src/data/xlsxhandler.cpp
+++ b/src/data/xlsxhandler.cpp
@@ -6,6 +6,9 @@
 namespace AnaOpRecorder = AnalysisOperationRecorder;
 using AnaOpRecorderOperation = AnalysisOperationRecorder::AnalysisOperation;
 
+using AnalysisMode = Global::AnalysisMode;
+
+
 QString XlsxHandler::_currentFilePath;
 
 void XlsxHandler::test()
@@ -292,7 +295,7 @@ void XlsxHandler::writeAnalysisOperation(const QString filePath)
         QString analysisOpName;
 
         switch(ao.mode){
-        case Global::NumericalLabel:
+        case AnalysisMode::NumericalLabel:
         {
             analysisOpName = AnalysisOperationRecorder::NumericalLabelStr;
             break;
@@ -406,6 +409,12 @@ QXlsx::Document* XlsxHandler::openXlsxFile(const QString& sourceFilePath) {
 
 void XlsxHandler::readAnalysisOperation(QXlsx::Worksheet *sheet, int &startLineIndex)
 {
+    QXlsx::Cell *cell = sheet->cellAt(startLineIndex, 2);
+    if (!cell) {
+        logde << "Cell does not exist.";
+        return;
+    }
+
     int size   = sheet->cellAt(startLineIndex++, 2)->value().toInt();
 
     logde<<"ana op size:"<<size;
@@ -433,7 +442,7 @@ void XlsxHandler::readAnalysisOperation(QXlsx::Worksheet *sheet, int &startLineI
         ao.x1 = sheet->cellAt(startLineIndex, 2)->value().toDouble();
         ao.x2 = sheet->cellAt(startLineIndex, 3)->value().toDouble();
 
-        AnaOpRecorder::_fileAnanlysisOperationVtr.push_back(ao);
+        AnaOpRecorder::_ananlysisOperationVtr.push_back(ao);
 
         startLineIndex++;
 
diff --git a/src/global.h b/src/global.h
index e7938fa..4e8f634 100644
--- a/src/global.h
+++ b/src/global.h
@@ -7,6 +7,19 @@
 
 #include "protocol.h"
 
+#if 0
+enum AnalysisMode{
+    Null,
+    NumericalLabel,
+    StartPoint,
+    StopPoint,
+    PeakSynthesisAnalysis,
+    GlassTransition,
+    OnsetTemperaturePoint,
+    EndsetTemperaturePoint
+};
+#endif
+
 namespace Global {
 const QString ConSoftVersion = "0.9.7.1";
 
@@ -43,7 +56,6 @@ enum AnalysisMode{
     OnsetTemperaturePoint,
     EndsetTemperaturePoint
 };
-
 enum Mode{
     Analysis,
     ConnectedToDev,
@@ -123,86 +135,9 @@ QString converDoubleToStr(const double);
 void quadraticLeastSquaresFit(double x[], double y[], int n, double coeff[]);
 double findNegativeStartPoint(double m, double b, double start, double end);
 
-}
-#if 0
-class Global:public QObject
-{
-    Q_OBJECT
-public:
-    Global();
-    static Global* instance();
-
-    enum Mode{
-        Analysis,
-        ConnectedToDev,
-        DeliveredData,
-        ExperimentStart
-    };
-
-    void setMode(const Mode);
-    Mode getMode(){return _mode;}
-
-    enum DeviceConnectionStatus{
-        Disconnected,
-        Connected
-    };
-
-#if 0
-    void setDeviceConnectionStatus(const DeviceConnectionStatus);
-    DeviceConnectionStatus getDeviceConnectionStatus(){return _deviceConnectStatus;}
-#endif
-
-    struct ExperimentData {
-        float runTime;
-        float sampleTemp;
-        float dsc;
-    };
-
-    //    struct ExpeInfo
-    //    {
-    //        QString sampleName;
-    //        float sampleWeight;
-    //        QString date;
-    //        QString userName;
-    //    };
-
-    enum TestType{
-        OIT,
-        NoneOIT
-    };
-
-    struct ExperimentInfo{
-        // experiment info
-        QString sampleName;
-        QString sampleWeight;
-        QString date;
-        QString experimentor;
-        // phase info
-        TestType testType;
-        GasType initialAtmosPhere;
-        int phaseSize;
-
-        QVector<Phase> phaseVtr;
-    };
-
-    ExperimentInfo _experimentInfo;
-
-    struct PhaseTotalInfo{
-        int phaseIndex; // from 1 to 6.
-        Phase phase;
-        QVector<ExperimentData> dataVtr;
-    };
-
-    QVector<QPair<QCPCurve*,QVector<Global::ExperimentData>>> _curveDataVtr;
-
-signals:
-    void sigModeModify(const Mode);
-    void sigDeviceConnnectionStatusModify(const DeviceConnectionStatus);
-public slots:
-private:
-    Mode _mode;
-    DeviceConnectionStatus _deviceConnectStatus;
 };
-#endif
+
+
+
 
 #endif // GLOBAL_H
diff --git a/src/ui/analysisoperationrecorder.h b/src/ui/analysisoperationrecorder.h
index 587635c..c776cd9 100644
--- a/src/ui/analysisoperationrecorder.h
+++ b/src/ui/analysisoperationrecorder.h
@@ -2,8 +2,11 @@
 #define ANALYSISOPERATIONRECORDER_H
 
 #include "centralwidget.h"
+#include "global.h"
 
 namespace AnalysisOperationRecorder {
+using AnalysisMode = Global::AnalysisMode;
+
 const QString NumericalLabelStr("NumericalLabel");
 const QString StartPointStr("StartPoint");
 const QString StopPointStr("StopPoint");
@@ -26,7 +29,7 @@ enum AnalysisMode{
 #endif
 
 struct AnalysisOperation{
-    CentralWidget::AnalysisMode mode;
+    AnalysisMode mode;
     double x1,x2;
 };
 
diff --git a/src/ui/centralwidget.cpp b/src/ui/centralwidget.cpp
index d393126..03e46e0 100644
--- a/src/ui/centralwidget.cpp
+++ b/src/ui/centralwidget.cpp
@@ -15,7 +15,6 @@
 
 namespace AnaOpRecorder = AnalysisOperationRecorder;
 using AnaOpRecorderOperation = AnalysisOperationRecorder::AnalysisOperation;
-//using AnaOpAnalysisMode = AnalysisOperationRecorder::AnalysisMode;
 
 CentralWidget::CentralWidget(QWidget *parent)
     : QWidget(parent)
@@ -158,7 +157,7 @@ void CentralWidget::switchAxisMode()
     _customPlot->replot();
 }
 
-void CentralWidget::setAnalysisMode(const CentralWidget::AnalysisMode mode)
+void CentralWidget::setAnalysisMode(const AnalysisMode mode)
 {
     _analysisMode = mode;
 
@@ -264,7 +263,7 @@ void CentralWidget::slotRecvAnalysisFileName(const QString &filePath)
     for(int i = 0;i < cfd.phaseTotalVtr.size();i++){
         Global::PhaseTotalInfo& pti = cfd.phaseTotalVtr[i];
 
-    //    logde<<"data Vtr size:"<<pti.dataVtr.size();
+        //    logde<<"data Vtr size:"<<pti.dataVtr.size();
 
         PointCalculate::setExperimentData(pti.dataVtr);
 
@@ -300,9 +299,11 @@ void CentralWidget::slotRecvAnalysisFileName(const QString &filePath)
     }
 
     // Add analysis operation data.
-    //loadAnalysisData(_analysisMode,x1,x2);
-    for(AnaOpRecorder::AnalysisOperation& ao:AnalysisOperationRecorder::_ananlysisOperationVtr){
-        loadAnalysisData(ao.mode,ao.x1,ao.x2);
+    if(AnalysisOperationRecorder::_ananlysisOperationVtr.size() > 0){
+        for(AnaOpRecorder::AnalysisOperation& ao
+            :AnalysisOperationRecorder::_ananlysisOperationVtr){
+            loadAnalysisData(ao.mode,ao.x1,ao.x2);
+        }
     }
     // Refresh ui.
     _customPlot->rescaleAxes();
@@ -496,7 +497,7 @@ void CentralWidget::slotAnalysisSettingConfirm()
 
     slotAnalysisSettingApply();
 
-    setAnalysisMode(CentralWidget::AnalysisMode::Null);
+    setAnalysisMode(AnalysisMode::Null);
 
     _line1->setVisible(false);
     _line2->setVisible(false);
@@ -516,7 +517,7 @@ void CentralWidget::slotAnalysisSettingCancel()
 {
     clearData(ClearDataMode::Undo);
 
-    setAnalysisMode(CentralWidget::AnalysisMode::Null);
+    setAnalysisMode(AnalysisMode::Null);
 
     _line1->setVisible(false);
     _line2->setVisible(false);
@@ -1130,11 +1131,11 @@ void CentralWidget::loadAnalysisData(const CentralWidget::AnalysisMode mode, con
         if(_analysisMode == AnalysisMode::StartPoint){
             point = startEndPointPair.first;
             str = PointCalculate::textFormatStartPoint(point);
-            ao.mode = AnalysisMode::StartPoint;
+            ao.mode = Global::AnalysisMode::StartPoint;
         }else{
             point = startEndPointPair.second;
             str = PointCalculate::textFormatEndPoint(point);
-            ao.mode = AnalysisMode::StopPoint;
+            ao.mode = Global::AnalysisMode::StopPoint;
         }
 
         drawText(point,str);
diff --git a/src/ui/centralwidget.h b/src/ui/centralwidget.h
index d54dcb3..e120c5b 100644
--- a/src/ui/centralwidget.h
+++ b/src/ui/centralwidget.h
@@ -11,11 +11,13 @@
 #include "filemanager.h"
 #include "pointcalculate.h"
 #include "localcustomplot.h"
+#include "analysisoperationrecorder.h"
 
 class CentralWidget:public QWidget
 {
     Q_OBJECT
 public:
+#if 0
     enum AnalysisMode{
         Null,
         NumericalLabel,
@@ -26,6 +28,11 @@ public:
         OnsetTemperaturePoint,
         EndsetTemperaturePoint
     };
+#endif
+
+    using AnalysisMode = Global::AnalysisMode;
+
+
     CentralWidget(QWidget *parent = nullptr);
     ~CentralWidget();