diff --git a/AnalysisTool-release/bin/DSCAnalysisTool_1.0.2.exe b/AnalysisTool-release/bin/DSCAnalysisTool_1.0.2.exe
new file mode 100644
index 0000000..14940c9
Binary files /dev/null and b/AnalysisTool-release/bin/DSCAnalysisTool_1.0.2.exe differ
diff --git a/AnalysisTool-release/bin/log/20250605.log b/AnalysisTool-release/bin/log/20250605.log
new file mode 100644
index 0000000..df1f479
--- /dev/null
+++ b/AnalysisTool-release/bin/log/20250605.log
@@ -0,0 +1,24 @@
+[2025-06-05 14:26:20,323] main...
+[2025-06-05 14:26:20,325] config file existed. 
+[2025-06-05 14:26:20,363] version:1.0.2.0
+[2025-06-05 14:26:20,396] setEventHandlerEnable...0
+[2025-06-05 14:27:13,511] main...
+[2025-06-05 14:27:13,511] config file existed. 
+[2025-06-05 14:27:13,520] version:1.0.2.0
+[2025-06-05 14:27:13,529] setEventHandlerEnable...0
+[2025-06-05 14:27:17,437] xlsx sample weight:8.17
+[2025-06-05 14:27:17,437] startLineIndex:11
+[2025-06-05 14:27:17,437] data size:6930
+[2025-06-05 14:27:17,442] ana op size:0
+[2025-06-05 14:27:22,232] setEventHandlerEnable...1
+[2025-06-05 14:27:31,300] dataVtr size:6929
+[2025-06-05 14:27:31,300] select point param left,right:226.746,248.46
+[2025-06-05 14:27:31,300] peakPoint:232.533,11.7595
+[2025-06-05 14:27:31,300] peak point:232.533,11.7595
+[2025-06-05 14:27:31,300] select point left:232.479,11.745
+[2025-06-05 14:27:31,300] select point right:232.593,11.7372
+[2025-06-05 14:27:31,300] coefficient:1
+[2025-06-05 14:27:31,300] area:0.00856458
+[2025-06-05 14:27:31,300] peakPoint:232.533,11.7595
+[2025-06-05 14:27:31,300] start,end:0,0
+[2025-06-05 14:27:31,300] xMax:332.214
diff --git a/AnalysisTool-release/experiment_data/sample_data/锡铜炉实验.xlsx b/AnalysisTool-release/experiment_data/sample_data/锡铜炉实验.xlsx
new file mode 100644
index 0000000..a909af9
Binary files /dev/null and b/AnalysisTool-release/experiment_data/sample_data/锡铜炉实验.xlsx differ
diff --git a/experiment_data/analysis_state/1434-new.xlsx b/experiment_data/analysis_state/1434-new.xlsx
new file mode 100644
index 0000000..53a6d67
Binary files /dev/null and b/experiment_data/analysis_state/1434-new.xlsx differ
diff --git a/experiment_data/analysis_state/1625-new.xlsx b/experiment_data/analysis_state/1625-new.xlsx
new file mode 100644
index 0000000..1f2b1bb
Binary files /dev/null and b/experiment_data/analysis_state/1625-new.xlsx differ
diff --git a/experiment_data/analysis_state/1637-new.xlsx b/experiment_data/analysis_state/1637-new.xlsx
new file mode 100644
index 0000000..6fbbcac
Binary files /dev/null and b/experiment_data/analysis_state/1637-new.xlsx differ
diff --git a/experiment_data/analysis_state/6-1-new.xlsx b/experiment_data/analysis_state/6-1-new.xlsx
new file mode 100644
index 0000000..b5fd905
Binary files /dev/null and b/experiment_data/analysis_state/6-1-new.xlsx differ
diff --git a/experiment_data/analysis_state/6-155new.xlsx b/experiment_data/analysis_state/6-155new.xlsx
new file mode 100644
index 0000000..4717bf9
Binary files /dev/null and b/experiment_data/analysis_state/6-155new.xlsx differ
diff --git a/experiment_data/analysis_state/6-15new.xlsx b/experiment_data/analysis_state/6-15new.xlsx
new file mode 100644
index 0000000..64b00f3
Binary files /dev/null and b/experiment_data/analysis_state/6-15new.xlsx differ
diff --git a/experiment_data/analysis_state/6-new.xlsx b/experiment_data/analysis_state/6-new.xlsx
new file mode 100644
index 0000000..0efa999
Binary files /dev/null and b/experiment_data/analysis_state/6-new.xlsx differ
diff --git a/experiment_data/analysis_state/63-new.xlsx b/experiment_data/analysis_state/63-new.xlsx
new file mode 100644
index 0000000..79bba7c
Binary files /dev/null and b/experiment_data/analysis_state/63-new.xlsx differ
diff --git a/experiment_data/analysis_state/64-new.xlsx b/experiment_data/analysis_state/64-new.xlsx
new file mode 100644
index 0000000..ef40192
Binary files /dev/null and b/experiment_data/analysis_state/64-new.xlsx differ
diff --git a/experiment_data/analysis_state/65-new.xlsx b/experiment_data/analysis_state/65-new.xlsx
new file mode 100644
index 0000000..2ccaf42
Binary files /dev/null and b/experiment_data/analysis_state/65-new.xlsx differ
diff --git a/experiment_data/analysis_state/~$1637-new.xlsx b/experiment_data/analysis_state/~$1637-new.xlsx
new file mode 100644
index 0000000..d4a5841
Binary files /dev/null and b/experiment_data/analysis_state/~$1637-new.xlsx differ
diff --git a/src/data/lowesssmoother.cpp b/src/data/lowesssmoother.cpp
index 39ccbe6..88cb7e6 100644
--- a/src/data/lowesssmoother.cpp
+++ b/src/data/lowesssmoother.cpp
@@ -1,4 +1,4 @@
-#include "LowessSmoother.h"
+#include "lowesssmoother.h"
 #include <numeric>
 
 namespace Lowess {
diff --git a/src/data/pointcalculate.cpp b/src/data/pointcalculate.cpp
index 9f8d293..f6de377 100644
--- a/src/data/pointcalculate.cpp
+++ b/src/data/pointcalculate.cpp
@@ -892,3 +892,4 @@ QString PointCalculate::textFormatGlassTranstionWithTime(const float t1, const f
 }
 
 
+
diff --git a/src/data/xlsxhandler.cpp b/src/data/xlsxhandler.cpp
index ca38ec0..6333ad0 100644
--- a/src/data/xlsxhandler.cpp
+++ b/src/data/xlsxhandler.cpp
@@ -20,7 +20,7 @@ void XlsxHandler::test()
 #endif
 
     QString sourceFilePath = QDir::currentPath() + "/sample-save.xlsx";
-    writeFile(sourceFilePath);
+    writeExperimentFile(sourceFilePath);
 }
 
 int XlsxHandler::readFile(const QString filePath, Global::CurveFileData &cfd)
@@ -79,11 +79,11 @@ int XlsxHandler::readFile(const QString filePath, Global::CurveFileData &cfd)
         phaseTotalVtr.push_back(phaseTotal);
 
         // print
-//        logde<<"index:"<<i<<",phase cut off temp:"<<phaseTotal.phase.cutoff_temp;
+        //        logde<<"index:"<<i<<",phase cut off temp:"<<phaseTotal.phase.cutoff_temp;
     }
 
-//       logde<<"index:"<<cfd.phaseTotalVtr.first().phaseIndex
-//           <<",phase cut off temp:"<<cfd.phaseTotalVtr.first().phase.cutoff_temp;
+    //       logde<<"index:"<<cfd.phaseTotalVtr.first().phaseIndex
+    //           <<",phase cut off temp:"<<cfd.phaseTotalVtr.first().phase.cutoff_temp;
 
     readAnalysisOperation(workSheet,dataIndex,cfd);
 
@@ -125,12 +125,15 @@ void XlsxHandler::readPhaseData(QXlsx::Worksheet *workSheet, int &startLineIndex
     }
 }
 
-void XlsxHandler::writeFile(const QString filePath)
+void XlsxHandler::writeExperimentFile(const QString filePath)
 {
+    logde<<"write file...";
+#if 0
     if(Global::_curveExperimentDataVtr.empty()){
         logde<<"_curveExperimentDataVtr empty...";
-               return;
+        return;
     }
+#endif
 
     Global::ExperimentInfo& ei = Global::_experimentInfo;
 
@@ -198,7 +201,7 @@ void XlsxHandler::writeFile(const QString filePath)
         const Phase& phase = ei.phaseVtr.at(i);
 
         if(phase.onoff == 0){
-//            logde<<"onoff == 0.";
+            //            logde<<"onoff == 0.";
             continue;
         }
 
@@ -247,8 +250,8 @@ void XlsxHandler::writeFile(const QString filePath)
         row++;
 
         // phase data.
-//        logde<<"Global::_curveExperimentDataVtr size:"
-//            <<Global::_curveExperimentDataVtr.size();
+        //        logde<<"Global::_curveExperimentDataVtr size:"
+        //            <<Global::_curveExperimentDataVtr.size();
 
         const QVector<Global::ExperimentData>& edVtr =
                 Global::_curveExperimentDataVtr.at(i).dataVtr;
@@ -258,10 +261,10 @@ void XlsxHandler::writeFile(const QString filePath)
         xlsx.write(row , 2, edVtr.size());
         row++;
 
-//        logde<<"edVtr size:"<<edVtr.size();
+        //        logde<<"edVtr size:"<<edVtr.size();
 
         for(int index = 0;index < edVtr.size();index++){
-//            logde<<"index :"<<index;
+            //            logde<<"index :"<<index;
             const Global::ExperimentData & ed = edVtr.at(index);
 
             xlsx.write(row , 1, index);
@@ -286,7 +289,7 @@ void XlsxHandler::writeFile(const QString filePath)
     
 }
 
-void XlsxHandler::writeAnalysisOperation(const QString filePath)
+void XlsxHandler:: appendAnalysisOperation(const QString filePath)
 {
     QXlsx::Document* xlsx = openXlsxFile(_currentFilePath);
     if(!xlsx){
@@ -466,6 +469,10 @@ void XlsxHandler::writeAnalysisOperationDetail(QXlsx::Document *xlsx, const int
     QVector<AnalysisOperationRecorder::AnalysisOperation>& aoVtr =
             AnalysisOperationRecorder::_analysisOperationVtr;
 
+    if(aoVtr.empty()){
+        return;
+    }
+
     xlsx->write(localRow , 1, ConAnalysisOperationCount);
     xlsx->write(localRow , 2, aoVtr.size());
     localRow++;
@@ -518,3 +525,56 @@ void XlsxHandler::writeAnalysisOperationDetail(QXlsx::Document *xlsx, const int
         localRow++;
     }
 }
+
+void XlsxHandler::writeSmoothnessFile(const QString filePath)
+{
+#if 0
+    if(Global::_curveFileDataVtr.empty()){
+        // Load experiment data.
+        logde<<"experiment vtr size:"<<Global::_curveExperimentDataVtr.size();
+        for(Global::CurveExperimentData& ced:Global::_curveExperimentDataVtr){
+            if(_centralWidget->isCurrentCurve(ced.curve)){
+                logde<<"load experiment data.";
+                //                PointCalculate::setAnalysisData(ced.dataVtr);
+                dataVtr = ced.dataVtr;
+                Global::_smoothnessFileName = ced.fileName;
+                break;
+            }
+        }
+    }else{
+        // Load xlsx file data.
+        for(Global::CurveFileData& cfd:Global::_curveFileDataVtr){
+            for(Global::PhaseTotalInfo& pti:cfd.phaseTotalVtr){
+                if(_centralWidget->isCurrentCurve(pti.curve)){
+                    //                    PointCalculate::setAnalysisData(pti.dataVtr);
+                    dataVtr = pti.dataVtr;
+                    Global::_smoothnessFileName = cfd.fileName;
+                    break;
+                }
+            }
+        }
+    }
+#endif
+}
+
+void XlsxHandler::writeAnalysisiFile(const QString filePath)
+{
+    QXlsx::Document* xlsx = openXlsxFile(_currentFilePath);
+    if(!xlsx){
+        logde<<"xlsx is nullptr." ;
+        return;
+    }
+
+    QXlsx::Worksheet *sheet = xlsx->currentWorksheet();
+    if(!sheet)
+    {
+        logde << "current sheet is empty.";
+        return;
+    }
+    int index = sheet->dimension().lastRow();
+    logde<<"lastRow:"<<index;
+
+    int row = index + 1;
+
+    writeAnalysisOperationDetail(xlsx,row);
+}
diff --git a/src/data/xlsxhandler.h b/src/data/xlsxhandler.h
index 212efdd..f613f88 100644
--- a/src/data/xlsxhandler.h
+++ b/src/data/xlsxhandler.h
@@ -24,10 +24,13 @@ namespace XlsxHandler {
     void readPhaseData(QXlsx::Worksheet*,int& startLineIndex,Global::PhaseTotalInfo&);
     void readAnalysisOperation(QXlsx::Worksheet*,int& startLineIndex,Global::CurveFileData&);
 
-    void writeFile(const QString filePath);
-    void writeAnalysisOperation(const QString filePath);
+    void writeExperimentFile(const QString filePath);
+    void appendAnalysisOperation(const QString filePath);
+    void writeAnalysisiFile(const QString filePath);
     void writeAnalysisOperationDetail(QXlsx::Document*doc,const int row);
 
+    void writeSmoothnessFile(const QString filePath);
+
     extern QString _currentFilePath;
 
     const QString ConUnitMg = "mg";
diff --git a/src/global.cpp b/src/global.cpp
index a518a8e..7beac0b 100644
--- a/src/global.cpp
+++ b/src/global.cpp
@@ -6,6 +6,8 @@
 namespace Global {
 Mode _mode = Mode::Analysis;
 
+AxisMode _axisMode = AxisMode::SingleY;
+
 QVector<CurveFileData> _curveFileDataVtr;
 
 int _currentPhase = 0;
@@ -13,6 +15,10 @@ ExperimentInfo _experimentInfo;
 QVector<CurveExperimentData> _curveExperimentDataVtr;
 CurveExperimentData* _currentCurveExperimentDataPtr = nullptr;
 
+bool _smoothnessFlag = false;
+QVector<CurveExperimentData> _curveSmoothnessDataVtr;
+QString _smoothnessFileName;
+
 bool _enthalpyCoefficientEnableFlag = false;
 QVector<double> _enthalpyCoefficientVtr;
 
diff --git a/src/global.h b/src/global.h
index c80a8d3..9a8e3f7 100644
--- a/src/global.h
+++ b/src/global.h
@@ -34,12 +34,18 @@ const double OnsetAndEndSetRate = 0.01;
 
 //curve object name
 const QString objectNameExperiemnt("experiment");
+//const QString objectNameSmoothness("smoothness");
 //
 enum LanguageType{
     Chinese,
     English
 };
 
+enum AxisMode{
+    SingleY,
+    DoubleY
+};
+
 const QString EnglishStr("English");
 const QString ChineseStr("中文");
 
@@ -111,6 +117,12 @@ extern int _currentPhase;
 extern ExperimentInfo _experimentInfo;
 extern QVector<CurveExperimentData> _curveExperimentDataVtr;
 extern CurveExperimentData* _currentCurveExperimentDataPtr;
+extern bool _smoothnessFlag;
+#if 0
+// Smoothness data
+extern QVector<CurveExperimentData> _curveSmoothnessDataVtr;
+extern QString _smoothnessFileName;
+#endif
 
 // Call clear function at the right time.
 void clearExperimentData();
@@ -124,6 +136,8 @@ extern bool _displayTimeValue;
 //
 extern LanguageType _languageType;
 
+extern AxisMode _axisMode;
+
 // common func
 QString converDoubleToStr(const double);
 void quadraticLeastSquaresFit(double x[], double y[], int n, double coeff[]);
diff --git a/src/main.cpp b/src/main.cpp
index 31598c5..1e59566 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -15,7 +15,7 @@
 
 int main(int argc, char *argv[])
 {
-    system("chcp 65001");
+//    system("chcp 65001");
     QTextCodec *codec = QTextCodec::codecForName("UTF-8");
     QTextCodec::setCodecForLocale(codec);
 
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 7b8bf93..28b08d7 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -1,5 +1,6 @@
 #include <qmessagebox.h>
 
+#include "lowesssmoother.h"
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "global.h"
@@ -269,18 +270,24 @@ bool MainWindow::saveFile(const QString fileName,const Global::Mode mode)
         return false;
     }
 
+    // Save file.
     if(mode == Global::Mode::Analysis){
         if(Global::_curveFileDataVtr.empty()){
             logde<<"analysis experiemt data...";
-            XlsxHandler::writeFile(filePath);
-//            XlsxHandler::writeAnalysisOperation(filePath);
+            XlsxHandler::writeExperimentFile(filePath);
+            //            XlsxHandler::writeAnalysisOperation(filePath);
         }else{
             logde<<"analysis xlsx data...";
-            XlsxHandler::writeAnalysisOperation(filePath);
+            if(Global::_smoothnessFlag){
+
+            }else{
+                XlsxHandler::appendAnalysisOperation(filePath);
+            }
         }
     }else if(mode == Global::Mode::Experiment){
         logde<<"writeFile...";
-        XlsxHandler::writeFile(filePath);
+        XlsxHandler::writeExperimentFile(filePath);
+
 #if 0
         // Clear data.
         Global::clearExperimentData();
@@ -290,9 +297,203 @@ bool MainWindow::saveFile(const QString fileName,const Global::Mode mode)
     return true;
 }
 
+void MainWindow::smoothness(const int level)
+{
+    Global::_smoothnessFlag = true;
+    // process data.
+    QVector<Global::ExperimentData> targetDataVtr;
+    QString objectName;
+    QCPCurve ** curvePtrPtr;
+
+    if(!Global::_curveExperimentDataVtr.empty()){
+        for(auto & item:Global::_curveExperimentDataVtr){
+            if(_centralWidget->isCurrentCurve(item.curve)){
+                smoothnessDetail(level,item.dataVtr);
+
+                targetDataVtr = item.dataVtr;
+                objectName = Global::objectNameExperiemnt;
+                curvePtrPtr = &item.curve;
+            }
+        }
+    }else{
+        for(Global::CurveFileData &cfd :Global::_curveFileDataVtr){
+            for(Global::PhaseTotalInfo& pti:cfd.phaseTotalVtr){
+                if(_centralWidget->isCurrentCurve(pti.curve)){
+                    smoothnessDetail(level,pti.dataVtr);
+
+                    targetDataVtr = pti.dataVtr;
+                    objectName = cfd.fileName;
+                    curvePtrPtr = &pti.curve;
+
+                    //
+#if 0
+                    Global::ExperimentData ed;
+                    ed.sampleTemp = 2222;
+                    ed.dsc = 2222;
+
+                    pti.dataVtr.push_back(ed);
+#endif
+                }
+            }
+        }
+    }
+
+    //
+    _centralWidget->deleteCurrentCurve();
+
+    //
+    _centralWidget->addSmoothnessCurveData(targetDataVtr,objectName);
+
+    *curvePtrPtr = _centralWidget->getCurrentCurve();
+
+
+#if 0
+    // Get current data vtr;
+    QVector<Global::ExperimentData> dataVtr;
+
+    if(Global::_curveFileDataVtr.empty()){
+        // Load experiment data.
+        logde<<"experiment vtr size:"<<Global::_curveExperimentDataVtr.size();
+        for(Global::CurveExperimentData& ced:Global::_curveExperimentDataVtr){
+            if(_centralWidget->isCurrentCurve(ced.curve)){
+                logde<<"load experiment data.";
+                //                PointCalculate::setAnalysisData(ced.dataVtr);
+                dataVtr = ced.dataVtr;
+                Global::_smoothnessFileName = ced.fileName;
+                break;
+            }
+        }
+    }else{
+        // Load xlsx file data.
+        for(Global::CurveFileData& cfd:Global::_curveFileDataVtr){
+            for(Global::PhaseTotalInfo& pti:cfd.phaseTotalVtr){
+                if(_centralWidget->isCurrentCurve(pti.curve)){
+                    //                    PointCalculate::setAnalysisData(pti.dataVtr);
+                    dataVtr = pti.dataVtr;
+                    Global::_smoothnessFileName = cfd.fileName;
+                    break;
+                }
+            }
+        }
+    }
+
+    if(dataVtr.empty()){
+        return;
+    }
+
+    // smoothness.
+    Lowess::Config config;
+    config.smoothingFactor = level * 0.1;
+    config.robustnessIterations = 3;
+
+    std::vector<double> x;
+    std::vector<double> y;
+
+    for(Global::ExperimentData& ed:dataVtr)   {
+        if(Global::_axisMode == Global::AxisMode::SingleY){
+            x.push_back(ed.sampleTemp);
+        }else{
+            x.push_back(ed.runTime);
+        }
+
+        y.push_back(ed.dsc);
+    }
+
+    logde<<"smooth start...";
+    std::vector<double> yest = Lowess::smooth(x, y, config);
+    logde<<"smooth end...";
+
+    // Delete current curve;
+    _centralWidget->deleteCurrentCurve();
+
+    // Add new Curve.
+    QVector<Global::ExperimentData> newCurveDataVtr;
+    for(int i = 0; i < x.size();i++){
+        Global::ExperimentData ed;
+        if(Global::_axisMode == Global::AxisMode::SingleY){
+            ed.sampleTemp = x.at(i);
+            ed.runTime = dataVtr.at(i).runTime;
+        }else{
+            ed.runTime = x.at(i);
+            ed.sampleTemp = dataVtr.at(i).sampleTemp;
+        }
+
+        ed.dsc = yest.at(i);
+        ed.constantTempTime = dataVtr.at(i).constantTempTime;
+
+        newCurveDataVtr.push_back(ed);
+    }
+    _centralWidget->addSmoothnessCurveData(newCurveDataVtr);
+#endif
+}
+
+QVector<Global::ExperimentData> MainWindow::smoothnessDetail(const int level,QVector<Global::ExperimentData>& dataVtr)
+{
+    Lowess::Config config;
+    config.smoothingFactor = level * 0.1;
+    config.robustnessIterations = 3;
+
+    std::vector<double> x;
+    std::vector<double> y;
+
+    for(const Global::ExperimentData& ed:dataVtr)   {
+        if(Global::_axisMode == Global::AxisMode::SingleY){
+            x.push_back(ed.sampleTemp);
+        }else{
+            x.push_back(ed.runTime);
+        }
+
+        y.push_back(ed.dsc);
+    }
+
+    logde<<"smooth start...";
+    std::vector<double> yest = Lowess::smooth(x, y, config);
+    logde<<"smooth end...";
+
+    // target data vector.
+    QVector<Global::ExperimentData> targetVtr;
+
+    for(int i = 0; i < x.size();i++){
+        Global::ExperimentData ed;
+        if(Global::_axisMode == Global::AxisMode::SingleY){
+            ed.sampleTemp = x.at(i);
+            ed.runTime = dataVtr.at(i).runTime;
+        }else{
+            ed.runTime = x.at(i);
+            ed.sampleTemp = dataVtr.at(i).sampleTemp;
+        }
+
+        ed.dsc = yest.at(i);
+        ed.constantTempTime = dataVtr.at(i).constantTempTime;
+
+        targetVtr.push_back(ed);
+    }
+
+    dataVtr.clear();
+    dataVtr = targetVtr;
+
+    return targetVtr;
+}
+
+void MainWindow::smoothnessExperimentData(const int level)
+{
+#if 0
+    for(int i = 0;i < Global::_curveExperimentDataVtr.size();i++){
+        Global::CurveExperimentData ced = Global::_curveExperimentDataVtr.at(i);
+        smoothnessDetail()
+    }
+#endif
+
+    for(auto & item:Global::_curveExperimentDataVtr){
+        smoothnessDetail(level,item.dataVtr);
+    }
+
+}
+
 void MainWindow::on_actionStop_triggered()
 {
     logde<<" Stop experiment ...";
+
     if(Global::_mode == Global::Mode::Experiment)
     {
         QByteArray ba = DataParser::setDeviceStartStop(DeviceStartMode::Stop);
@@ -303,6 +504,7 @@ void MainWindow::on_actionStop_triggered()
         //        if(saveExperimentFile(Global::_experimentInfo.sampleName)){
         //            _leftWidget->reloadFileName();
         //        }
+
         if(saveFile(Global::_experimentInfo.sampleName,Global::Mode::Experiment)){
             _leftWidget->reloadFileName();
         }
@@ -365,6 +567,7 @@ void MainWindow::slotSaveExperimentalDataMsgBox()
     } else {
         on_actionClearAllData_triggered();
     }
+
 #if 0
     // Clear data.
     logde<<"save mesg box.clearExperimentData...";
@@ -548,5 +751,47 @@ void MainWindow::on_actionLanguage_triggered()
         Global::_languageType = Global::LanguageType::Chinese;
         ui->actionLanguage->setText(Global::ChineseStr);
     }
-
 }
+
+void MainWindow::on_actionSmoothness1_triggered()
+{
+    smoothness(1);
+}
+
+void MainWindow::on_actionSmoothness2_triggered()
+{
+    smoothness(2);
+}
+void MainWindow::on_actionSmoothness3_triggered()
+{
+    smoothness(3);
+}
+void MainWindow::on_actionSmoothness4_triggered()
+{
+    smoothness(4);
+}
+void MainWindow::on_actionSmoothness5_triggered()
+{
+    smoothness(5);
+}
+void MainWindow::on_actionSmoothness6_triggered()
+{
+    smoothness(6);
+}
+void MainWindow::on_actionSmoothness7_triggered()
+{
+    smoothness(7);
+}
+void MainWindow::on_actionSmoothness8_triggered()
+{
+    smoothness(8);
+}
+void MainWindow::on_actionSmoothness9_triggered()
+{
+    smoothness(9);
+}
+void MainWindow::on_actionSmoothness10_triggered()
+{
+    smoothness(10);
+}
+
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 6e3f591..49e55e1 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -98,12 +98,29 @@ private slots:
 
     void on_actionLanguage_triggered();
 
+    void on_actionSmoothness1_triggered();
+    void on_actionSmoothness2_triggered();
+    void on_actionSmoothness3_triggered();
+    void on_actionSmoothness4_triggered();
+    void on_actionSmoothness5_triggered();
+    void on_actionSmoothness6_triggered();
+    void on_actionSmoothness7_triggered();
+    void on_actionSmoothness8_triggered();
+    void on_actionSmoothness9_triggered();
+    void on_actionSmoothness10_triggered();
+
 private:
+    void setAnalysisData();
     void connections();
     void setActionEnable(const bool);
     void setSubWidgetAttribute(QWidget *);
 
     bool saveFile(const QString fileName,const Global::Mode);
+
+    void smoothness(const int level);
+    QVector<Global::ExperimentData> smoothnessDetail(const int level,QVector<Global::ExperimentData>&);
+    void smoothnessExperimentData(const int level);
+
 private:
     bool _manuallyStopTheExperimentFlag;
     Ui::MainWindow *ui;
diff --git a/src/mainwindow.ui b/src/mainwindow.ui
index 7fe8411..b7bc2bb 100644
--- a/src/mainwindow.ui
+++ b/src/mainwindow.ui
@@ -75,16 +75,16 @@
      <property name="title">
       <string>平滑</string>
      </property>
-     <addaction name="action1"/>
-     <addaction name="action2"/>
-     <addaction name="action3"/>
-     <addaction name="action4"/>
-     <addaction name="action5"/>
-     <addaction name="action6"/>
-     <addaction name="action7"/>
-     <addaction name="action9"/>
-     <addaction name="action9_2"/>
-     <addaction name="action10"/>
+     <addaction name="actionSmoothness1"/>
+     <addaction name="actionSmoothness2"/>
+     <addaction name="actionSmoothness3"/>
+     <addaction name="actionSmoothness4"/>
+     <addaction name="actionSmoothness5"/>
+     <addaction name="actionSmoothness6"/>
+     <addaction name="actionSmoothness7"/>
+     <addaction name="actionSmoothness8"/>
+     <addaction name="actionSmoothness9"/>
+     <addaction name="actionSmoothness10"/>
     </widget>
     <addaction name="actionEnthalpyCorrectionEdit"/>
     <addaction name="actionEnthalpyCorrectionSelection"/>
@@ -360,52 +360,52 @@
     <string>language</string>
    </property>
   </action>
-  <action name="action1">
+  <action name="actionSmoothness1">
    <property name="text">
     <string>1级</string>
    </property>
   </action>
-  <action name="action2">
+  <action name="actionSmoothness2">
    <property name="text">
     <string>2级</string>
    </property>
   </action>
-  <action name="action3">
+  <action name="actionSmoothness3">
    <property name="text">
     <string>3级</string>
    </property>
   </action>
-  <action name="action4">
+  <action name="actionSmoothness4">
    <property name="text">
     <string>4级</string>
    </property>
   </action>
-  <action name="action5">
+  <action name="actionSmoothness5">
    <property name="text">
     <string>5级</string>
    </property>
   </action>
-  <action name="action6">
+  <action name="actionSmoothness6">
    <property name="text">
     <string>6级</string>
    </property>
   </action>
-  <action name="action7">
+  <action name="actionSmoothness7">
    <property name="text">
     <string>7级</string>
    </property>
   </action>
-  <action name="action9">
+  <action name="actionSmoothness8">
    <property name="text">
     <string>8级</string>
    </property>
   </action>
-  <action name="action9_2">
+  <action name="actionSmoothness9">
    <property name="text">
     <string>9级</string>
    </property>
   </action>
-  <action name="action10">
+  <action name="actionSmoothness10">
    <property name="text">
     <string>10级</string>
    </property>
diff --git a/src/ui/centralwidget.cpp b/src/ui/centralwidget.cpp
index 9fc02aa..6d3aea7 100644
--- a/src/ui/centralwidget.cpp
+++ b/src/ui/centralwidget.cpp
@@ -15,6 +15,7 @@
 
 namespace AnaOpRecorder = AnalysisOperationRecorder;
 using AnaOpRecorderOperation = AnalysisOperationRecorder::AnalysisOperation;
+using namespace Global;
 
 CentralWidget::CentralWidget(QWidget *parent)
     : QWidget(parent)
@@ -22,7 +23,6 @@ CentralWidget::CentralWidget(QWidget *parent)
     //    ,_customPlot(new QCustomPlot(this))
     ,_analysisMode(AnalysisMode::Null)
     ,_currentCurve(nullptr)
-    ,_axisMode(AxisMode::SingleY)
 {
     setMouseTracking(true);
 
@@ -119,6 +119,87 @@ void CentralWidget::switchAxisMode()
     uiLoadXlsxFileData();
 }
 
+bool CentralWidget::isCurrentCurve(QCPCurve *curve)
+{
+    return _currentCurve == curve;
+}
+
+void CentralWidget::deleteCurrentCurve()
+{
+    slotDelCurve(_currentCurve);
+}
+
+void CentralWidget::addSmoothnessCurveData(
+        const QVector<ExperimentData> &dataVtr,const QString objectName)
+{
+    PointCalculate::setAnalysisData(dataVtr);
+
+    // Load data.
+    //    QVector<Global::ExperimentData> dataVtr;
+    QVector<double> tVtr,xVtr, yVtr;
+    int index = 0;
+    for (const Global::ExperimentData &ed : dataVtr)
+    {
+        tVtr.push_back(index++);
+        if(_axisMode == AxisMode::SingleY){
+            xVtr.push_back(ed.sampleTemp);
+        }else{
+            xVtr.push_back(ed.runTime);
+        }
+        yVtr.push_back(ed.dsc);
+    }
+
+    _currentCurve = new QCPCurve(_customPlot->xAxis, _customPlot->yAxis);
+    _currentCurve->setData(tVtr, xVtr, yVtr);
+    _currentCurve->setSelectable(QCP::stWhole);     // 设置曲线可选
+    _currentCurve->setLineStyle(QCPCurve::lsLine);  // 线性连接
+
+    _currentCurve->setObjectName(objectName);
+
+    // Set axis range.
+    QPair<float, float> minMaxXAxisPair;
+    if(_axisMode == AxisMode::SingleY){
+        // Axis x is temperature value.
+        minMaxXAxisPair = PointCalculate::getMinAndMaxOfSampleTemp();
+    }else{
+        // Axis x is time value.
+        minMaxXAxisPair = PointCalculate::getMinAndMaxOfRunTime();
+    }
+    QPair<float, float>newXAxisPair = PointCalculate::getMinAndMaxOfAxis(
+                minMaxXAxisPair.first,minMaxXAxisPair.second);
+    _customPlot->xAxis->setRange(newXAxisPair.first, newXAxisPair.second);
+
+    QPair<float, float> minMaxYAxisPair = PointCalculate::getMinAndMaxOfDSC();
+    QPair<float, float>newYAxisPair = PointCalculate::getMinAndMaxOfAxis(
+                minMaxYAxisPair.first,minMaxYAxisPair.second);
+    _customPlot->yAxis->setRange(newYAxisPair.first ,
+                                 newYAxisPair.second);
+    //
+    //    pti.curve = _currentCurve;
+
+    // Add analysis operation data.
+#if 0
+    if(cfd.analysisOperationVtr.size() > 0){
+        for(AnaOpRecorder::AnalysisOperation& ao
+            :cfd.analysisOperationVtr){
+            loadAnalysisData(ao.mode,ao.x1,ao.x2,cfd.fileName);
+        }
+    }
+#endif
+
+    // Refresh ui.
+    _customPlot->replot();
+
+#if 0
+    // Save data.
+    CurveExperimentData ced;
+    ced.curve = _currentCurve;
+    ced.dataVtr = dataVtr;
+
+    //  Global::_curveSmoothnessDataVtr.push_back(ced);
+#endif
+}
+
 void CentralWidget::setAnalysisMode(const AnalysisMode mode)
 {
     _analysisMode = mode;
@@ -241,6 +322,7 @@ void CentralWidget::slotAnalysisSettingApply()
         return;
     }
 
+    // Set curve data to PointCalculate.
     if(Global::_curveFileDataVtr.empty()){
         // Load experiment data.
         logde<<"experiment vtr size:"<<Global::_curveExperimentDataVtr.size();
@@ -248,6 +330,7 @@ void CentralWidget::slotAnalysisSettingApply()
             if(ced.curve == _currentCurve){
                 logde<<"load experiment data.";
                 PointCalculate::setAnalysisData(ced.dataVtr);
+                break;
             }
         }
     }else{
@@ -261,6 +344,17 @@ void CentralWidget::slotAnalysisSettingApply()
             }
         }
     }
+#if 0
+    // Load smoothness data.
+    for(Global::CurveExperimentData& ced:Global::_curveSmoothnessDataVtr){
+        if(ced.curve == _currentCurve){
+            logde<<"load smoothness data.";
+            PointCalculate::setAnalysisData(ced.dataVtr);
+            break;
+        }
+    }
+#endif
+
     //
     double x1 = _line1->point1->coords().x();
     double x2 = _line2->point1->coords().x();
@@ -349,6 +443,7 @@ void CentralWidget::slotDrawCustomText(const QString str)
 void CentralWidget::slotDelCurve(QCPCurve *curve)
 {
     if(!curve){
+        logde<<"current curve is nullptr.";
         return;
     }
 
@@ -490,7 +585,6 @@ void CentralWidget::uiLoadXlsxFileData()
             _currentCurve->setObjectName(cfd.fileName);
 
             // Set axis range.
-
             QPair<float, float> minMaxXAxisPair;
             if(_axisMode == AxisMode::SingleY){
                 // Axis x is temperature value.
@@ -703,7 +797,7 @@ void CentralWidget::glassTransitionHandle(const double x1,const double x2,const
     QString str = PointCalculate::textFormatGlassTranstion(intersection1.x(),
                                                            averagePoint.x(),
                                                            intersection2.x());
-    if(_axisMode == AxisMode::DoubleY){
+    if(Global::_axisMode == Global::AxisMode::DoubleY){
         Global::ExperimentData intersection1Ed =
                 PointCalculate::getClosestDataByTemperature(intersection1.x());
         Global::ExperimentData averageEd =
@@ -750,10 +844,10 @@ QPointF CentralWidget::onsetTemperaturePointHandle(const double x1,const double
 {
     Global::ExperimentData ed = PointCalculate::findOnSetDataByTemperature(x1,x2);
 
-    if(_axisMode == AxisMode::SingleY){
-       return QPointF(ed.sampleTemp,ed.dsc);
+    if(Global::_axisMode == Global::AxisMode::SingleY){
+        return QPointF(ed.sampleTemp,ed.dsc);
     }else{
-       return QPointF(ed.runTime,ed.dsc);
+        return QPointF(ed.runTime,ed.dsc);
     }
 }
 
@@ -761,10 +855,10 @@ QPointF CentralWidget::endSetTemperaturePointHandle(const double x1, const doubl
 {
     Global::ExperimentData ed = PointCalculate::findEndSetDataByTemperature(x1,x2);
 
-    if(_axisMode == AxisMode::SingleY){
-       return QPointF(ed.sampleTemp,ed.dsc);
+    if(Global::_axisMode == Global::AxisMode::SingleY){
+        return QPointF(ed.sampleTemp,ed.dsc);
     }else{
-       return QPointF(ed.runTime,ed.dsc);
+        return QPointF(ed.runTime,ed.dsc);
     }
 }
 
@@ -848,7 +942,7 @@ QPointF CentralWidget::getTheCoordinatesOfTheTextBox(const QPointF point)
 
     QVector<double> ticks = _customPlot->xAxis->tickVector();
     int numTicks = ticks.size();
-//    logde<<"ticks:"<<numTicks;
+    //    logde<<"ticks:"<<numTicks;
 
     double distance = (xMax - xMin) / ticks.size();
 
@@ -970,6 +1064,8 @@ void CentralWidget::clearData(const CentralWidget::ClearDataMode mode)
         _line2->setVisible(false);
 
         _currentCurve = nullptr;
+
+        Global::_smoothnessFlag = false;
     case ClearDataMode::JustUi:
         //ui
         clearAllUiData();
@@ -1317,3 +1413,6 @@ void CentralWidget::slotAxisModify(const float temp)
     _customPlot->xAxis->setRange(10,value);
     _customPlot->yAxis->setRange(-5,5);
 }
+
+
+
diff --git a/src/ui/centralwidget.h b/src/ui/centralwidget.h
index 586fee5..9fc213a 100644
--- a/src/ui/centralwidget.h
+++ b/src/ui/centralwidget.h
@@ -31,16 +31,20 @@ public:
 
     QPixmap getPixMap();
 
-    enum AxisMode{
-        SingleY,
-        DoubleY
-    };
     void switchAxisMode();
+
     struct AxisInfo{
         bool visiable;
         double lower;
         double upper;
     };
+
+    bool isCurrentCurve(QCPCurve* curve);
+
+    void deleteCurrentCurve();
+    void addSmoothnessCurveData(const QVector<Global::ExperimentData> &,const QString objectName);
+
+    QCPCurve * getCurrentCurve(){return _currentCurve;}
 signals:
     void sigContextMenuShow(const QPoint);
     void sigSendLineXCoord(const int,const double);
@@ -109,11 +113,10 @@ private:
 private:
     AnalysisOperationRecorder::AnalysisMode _analysisMode;
     LocalCustomPlot *_customPlot;
-    QCPCurve *_currentCurve;
+ QCPCurve * _currentCurve;
     EventHandler* _eventHandler;
     QCPItemStraightLine *_line1,*_line2;
     QVector<QCPItemStraightLine*> _lineVtr;
-    AxisMode _axisMode;
     QVector<QString> _analysisFilePathVtr;
 
     double _x1Record;