diff --git a/src/components/CoordinateXYWidget.cpp b/src/components/CoordinateXYWidget.cpp
index 41d6598..8e190cd 100644
--- a/src/components/CoordinateXYWidget.cpp
+++ b/src/components/CoordinateXYWidget.cpp
@@ -9,6 +9,8 @@
 namespace
 {
     const int BLINK_FREQUENCY = 18;
+    const int XYWIDGET_WIDTH = 655;
+    const int XYWIDGET_HEIGHT = 655;
 }
 
 CoordinateXYWidget::CoordinateXYWidget(QWidget* aParent)
@@ -18,13 +20,15 @@ CoordinateXYWidget::CoordinateXYWidget(QWidget* aParent)
     , mBlinking(false)
     , mBlinkFrequency(0)
     , mBlinkPoint(QPointF())
+    , mBuffer()
     , mStopGradientEnd(0.05)
 {
-    setFixedSize(655,655);
+    setFixedSize(XYWIDGET_WIDTH, XYWIDGET_HEIGHT);
     connect(ScanProcessSequence::getInstance(), &ScanProcessSequence::startAutoLocate, this, &CoordinateXYWidget::startFlash);
     connect(ScanProcessSequence::getInstance(), &ScanProcessSequence::stopAutoLocate, this, &CoordinateXYWidget::stopFlash);
     connect(ScanProcessSequence::getInstance(), &ScanProcessSequence::quitAutoLocate, this, &CoordinateXYWidget::quit);
     connect(ScanProcessSequence::getInstance(), &ScanProcessSequence::autoLocateXYUpdated, this, &CoordinateXYWidget::setBlinkPoint);
+    initBuffer();
     hide();
 }
 
@@ -33,6 +37,32 @@ CoordinateXYWidget::~CoordinateXYWidget()
     mTimer->stop();
 }
 
+void CoordinateXYWidget::initBuffer()
+{
+    QPen pen;
+    pen.setWidth(2);
+    pen.setColor(Qt::gray);
+    pen.setStyle(Qt::SolidLine);
+    for(int angle=5; angle<=365; angle+=5)
+    {
+        mBuffer[angle] = QPixmap(XYWIDGET_WIDTH, XYWIDGET_HEIGHT);
+        mBuffer[angle].fill(Qt::transparent);
+        QPainter bufferPainter(&mBuffer[angle]);
+        bufferPainter.setRenderHint(QPainter::Antialiasing);
+        bufferPainter.setPen(pen);
+
+        int w = XYWIDGET_WIDTH - 5;
+        int h = XYWIDGET_HEIGHT - 5;
+        QConicalGradient coniGrad(w/2,h/2,360-angle);
+        coniGrad.setColorAt(0,QColor(0,0,0,255));
+        coniGrad.setColorAt(0.05,QColor(0,170,255,255));
+        coniGrad.setColorAt(1,QColor(0,0,0,255));
+        coniGrad.setSpread(QGradient::ReflectSpread);
+        bufferPainter.setBrush(coniGrad);
+        bufferPainter.drawEllipse(this->rect().center(),w/2,h/2);
+    }
+}
+
 void CoordinateXYWidget::paintEvent(QPaintEvent *event)
 {
     Q_UNUSED(event);
@@ -43,23 +73,28 @@ void CoordinateXYWidget::paintEvent(QPaintEvent *event)
     QPoint center = this->rect().center();
     QRect rect(center,QPoint(w,h));
     p.setRenderHint(QPainter::Antialiasing,true);
-
-
-    QConicalGradient coniGrad(w/2,h/2,360-mAngle);
-    coniGrad.setColorAt(0,QColor(0,0,0,255));
-    coniGrad.setColorAt(0.05,QColor(0,170,255,255));
-    coniGrad.setColorAt(mStopGradientEnd,QColor(0,0,0,255));
-    coniGrad.setColorAt(1,QColor(0,0,0,255));
-    coniGrad.setSpread(QGradient::ReflectSpread);
-    p.setBrush(coniGrad);
-
     QPen pen;
     pen.setWidth(2);
     pen.setColor(Qt::gray);
     pen.setStyle(Qt::SolidLine);
     p.setPen(pen);
 
-    p.drawEllipse(center,w/2,h/2);
+    if(mStopGradientEnd < 1)
+    {
+        QConicalGradient coniGrad(w/2,h/2,360-mAngle);
+        coniGrad.setColorAt(0,QColor(0,0,0,255));
+        coniGrad.setColorAt(0.05,QColor(0,170,255,255));
+        coniGrad.setColorAt(mStopGradientEnd,QColor(0,0,0,255));
+        coniGrad.setColorAt(1,QColor(0,0,0,255));
+        coniGrad.setSpread(QGradient::ReflectSpread);
+        p.setBrush(coniGrad);
+        p.drawEllipse(center,w/2,h/2);
+    }
+    else
+    {
+        p.drawPixmap(0,0, mBuffer[mAngle]);
+    }
+    p.setBrush(Qt::NoBrush);
     p.drawEllipse(center,w/2 - 100,h/2 - 100);
     pen.setColor(QColor(0, 224, 255, 255).lighter());
     p.setPen(pen);
diff --git a/src/components/CoordinateXYWidget.h b/src/components/CoordinateXYWidget.h
index fbe8f89..2325759 100644
--- a/src/components/CoordinateXYWidget.h
+++ b/src/components/CoordinateXYWidget.h
@@ -2,6 +2,7 @@
 #define COORDINATEXYWIDGET_H
 
 #include <QWidget>
+#include <QMap>
 
 class QTimer;
 
@@ -22,14 +23,15 @@ protected:
 private:
     void updateFlash();
     void updateStopFlash();
+    void initBuffer();
 
 private:
     int mAngle;
     QTimer* mTimer;
     bool mBlinking;
     int mBlinkFrequency;
-    int mBlinkPointX;
     QPointF mBlinkPoint;
+    QMap<int, QPixmap> mBuffer;
 
     double mStopGradientEnd;
 };
diff --git a/src/windows/MainWindow.cpp b/src/windows/MainWindow.cpp
index 3c1f657..8e56002 100644
--- a/src/windows/MainWindow.cpp
+++ b/src/windows/MainWindow.cpp
@@ -36,6 +36,7 @@ MainWindow::MainWindow(QWidget* aParent)
     , mTabWidget(new QTabWidget(this))
     , mInitializWidget(new InitializeWidget(this))
     , mShutdownWidget(new ShutdownWidget(nullptr))
+    , mScanPage(nullptr)
     , mTabInited(false)
 {
     mUI->setupUi(this);
@@ -112,6 +113,9 @@ MainWindow::MainWindow(QWidget* aParent)
             
     GUIErrorHandle::Default()->init();
     QApplication::setActiveWindow(centralWidget());
+    //初始化耗时，提前初始化
+    mScanPage = new ScanFormWidget(this);
+    mScanPage->hide();
 }
 
 MainWindow::~MainWindow()
@@ -188,8 +192,8 @@ void MainWindow::initializeTabWidget()
     mTabWidget->insertTab(0,verifyForm, tr("Recon"));
     auto selectForm = new SelectFormWidget(this);
     mTabWidget->insertTab(0,selectForm, tr("Select"));
-    auto scanForm = new ScanFormWidget(this);
-    mTabWidget->insertTab(0,scanForm, tr("Scan"));
+    //auto scanForm = new ScanFormWidget(this);
+    mTabWidget->insertTab(0,mScanPage, tr("Scan"));
 
     mTabWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 
diff --git a/src/windows/MainWindow.h b/src/windows/MainWindow.h
index 2cf6458..bc65a94 100644
--- a/src/windows/MainWindow.h
+++ b/src/windows/MainWindow.h
@@ -63,6 +63,7 @@ private:
     QTabWidget* mTabWidget;
     InitializeWidget* mInitializWidget;
     ShutdownWidget* mShutdownWidget;
+    QWidget* mScanPage;
 
     bool mTabInited;