diff --git a/experiment_data/analysis_state/peak.xlsx b/experiment_data/analysis_state/peak.xlsx
new file mode 100644
index 0000000..66e4142
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diff --git a/experiment_data/analysis_state/~$peak.xlsx b/experiment_data/analysis_state/~$peak.xlsx
new file mode 100644
index 0000000..d4a5841
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diff --git a/experiment_data/analysis_state/~$标样.xlsx b/experiment_data/analysis_state/~$标样.xlsx
new file mode 100644
index 0000000..d4a5841
Binary files /dev/null and b/experiment_data/analysis_state/~$标样.xlsx differ
diff --git a/src/data/pointcalculate.cpp b/src/data/pointcalculate.cpp
index ff94c92..d8bc7a7 100644
--- a/src/data/pointcalculate.cpp
+++ b/src/data/pointcalculate.cpp
@@ -178,6 +178,7 @@ QPointF PointCalculate::findClosestPointByX(float x) {
 
 void PointCalculate::setRegionPointX(const float left, const float right)
 {
+    logde<<"dataVtr size:"<<_dataVtr.size();
     logde<<"select point param left,right:"<<left<<","<<right;
 
     _leftSelectedPoint = getClosestPointByX(left);
@@ -455,19 +456,19 @@ QString PointCalculate::textFormatEndPoint(const QPointF point)
 QPointF PointCalculate::getClosestPointByY(const float left,const float right,const float valueY)
 {
     float minValue = std::numeric_limits<float>::infinity(); // 初始化为正无穷
-           QPointF closestPoint;
+    QPointF closestPoint;
 
-           for (const Global::ExperimentData& ed : _dataVtr) {
-               if (left < ed.sampleTemp && ed.sampleTemp < right) {
-                   float diff = std::abs(ed.dsc - valueY);
-                   if (diff < minValue) {
-                       minValue = diff;
-                       closestPoint = QPointF(ed.sampleTemp, ed.dsc);
-                   }
-               }
-           }
+    for (const Global::ExperimentData& ed : _dataVtr) {
+        if (left < ed.sampleTemp && ed.sampleTemp < right) {
+            float diff = std::abs(ed.dsc - valueY);
+            if (diff < minValue) {
+                minValue = diff;
+                closestPoint = QPointF(ed.sampleTemp, ed.dsc);
+            }
+        }
+    }
 
-           return closestPoint;
+    return closestPoint;
 }
 
 QString PointCalculate::textFormatGlassTranstion(const float t1,const float tg,const float t2)
@@ -479,3 +480,25 @@ QString PointCalculate::textFormatGlassTranstion(const float t1,const float tg,c
             .arg(QString::number(tg, 'f', 3))
             .arg(QString::number(t2, 'f', 3));
 }
+
+
+QPair<float, float> PointCalculate::getMaxMinValue()
+{
+    if (_dataVtr.isEmpty()) {
+        return QPair<float, float>(0.0f, 0.0f);
+    }
+
+    float maxDsc = std::numeric_limits<float>::lowest(); // 初始化为最小浮点数
+    float minDsc = std::numeric_limits<float>::max();    // 初始化为最大浮点数
+
+    for(const Global::ExperimentData &ed : _dataVtr) {
+        if (ed.dsc > maxDsc) {
+            maxDsc = ed.dsc;
+        }
+        if (ed.dsc < minDsc) {
+            minDsc = ed.dsc;
+        }
+    }
+
+    return QPair<float, float>(minDsc, maxDsc);
+}
diff --git a/src/data/pointcalculate.h b/src/data/pointcalculate.h
index d05f3bc..a899ce3 100644
--- a/src/data/pointcalculate.h
+++ b/src/data/pointcalculate.h
@@ -14,15 +14,16 @@ void setRegionPointX(const float,const float);
 QPointF getClosestPointByX(const float);
 QPointF getClosestPointByY(const float left,const float right,const float valueY);
 QPointF getPeakPoint();
+QPair<float, float>  getMaxMinValue();
 
 QPair<QPointF,QPointF> calculateStartAndEndPoint();
 float calculateArea();
 
 // text format
 QString textFormatPeakPoint(const float enthalpyValue,
-                   const float peakValue,
-                   const float startPoint,
-                   const float endPoint);
+                            const float peakValue,
+                            const float startPoint,
+                            const float endPoint);
 QString textFormatNumbericalLabel(const QPointF);
 QString textFormatStartPoint(const QPointF);
 QString textFormatEndPoint(const QPointF);
diff --git a/src/ui/centralwidget.cpp b/src/ui/centralwidget.cpp
index efcd010..f24adb7 100644
--- a/src/ui/centralwidget.cpp
+++ b/src/ui/centralwidget.cpp
@@ -175,6 +175,8 @@ void CentralWidget::slotRecvAnalysisFileName(const QString &fileName)
     for(int i = 0;i < cfd.phaseTotalVtr.size();i++){
         Global::PhaseTotalInfo& pti = cfd.phaseTotalVtr[i];
 
+        logde<<"data Vtr size:"<<pti.dataVtr.size();
+
         PointCalculate::setExperimentData(pti.dataVtr);
 
         QPair<QPointF,QPointF>startEndPointPair =  PointCalculate::getStartAndEndPoint();
@@ -182,8 +184,9 @@ void CentralWidget::slotRecvAnalysisFileName(const QString &fileName)
         QPointF endPoint = startEndPointPair.second;
         _customPlot->xAxis->setRange(0, endPoint.x() / 3 * 4);
 
-        QPointF peakPoint = PointCalculate::getPeakPoint();
-        float absY = std::abs(peakPoint.y());
+        //QPointF peakPoint = PointCalculate::getPeakPoint();
+        QPair<float, float> maxMinPair = PointCalculate::getMaxMinValue();
+        float absY = std::abs(maxMinPair.first - maxMinPair.second);
         _customPlot->yAxis->setRange(- absY * 2,absY *2);
 
         // 设置坐标轴标签
@@ -205,8 +208,6 @@ void CentralWidget::slotRecvAnalysisFileName(const QString &fileName)
         _currentCurve->setData(tVtr, xVtr, yVtr);
         _currentCurve->setSelectable(QCP::stWhole); // 设置曲线可选
 
-        //
-//        Global::_curveExperimentDataVtr.push_back();
     }
 
     _customPlot->replot();