diff --git a/source/designerView.cpp b/source/designerView.cpp
index 3b28a4a..7b4d97d 100644
--- a/source/designerView.cpp
+++ b/source/designerView.cpp
@@ -19,8 +19,8 @@ DesignerView::~DesignerView()
 void DesignerView::initialize()
 {
     //去掉QGraphicsView自带滚动条
-    //setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-    //setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     //设置背景
     setStyleSheet("background-image: url(:/images/checkerboard.png);\
                   padding: 0px; \
diff --git a/source/graphicsItem/graphicsPolygonItem.cpp b/source/graphicsItem/graphicsPolygonItem.cpp
index b95b5cf..b5f7409 100644
--- a/source/graphicsItem/graphicsPolygonItem.cpp
+++ b/source/graphicsItem/graphicsPolygonItem.cpp
@@ -50,8 +50,10 @@ void GraphicPolygonItem::updateCoordinate() //当执行了resie和editShape函
     {
         prepareGeometryChange();
         //更改图形绘制节点坐标，让图形中心和原点对齐
+        QPolygonF ptsOnScene = mapToScene(m_points); //所有操作都在scene坐标系下进行，然后在还原至item坐标系，否则会有跳转
         for(int i=0; i<m_points.count(); i++)
-            m_points[i] += delta;
+            ptsOnScene[i] += delta; //一定要在scene坐标系下执行操作，不能直接m_points += delta;因为缩放以后item自身的内部坐标系也会同步缩放，单位刻度和scene下的单位刻度不再一致，所以所有相关计算一定要在同一个坐标系下完成
+        m_points = mapFromScene(ptsOnScene);
         m_boundingRect = m_points.boundingRect();
         //移动整体图形，消除节点坐标更后的绘制跳转
         moveBy(-delta.x(), -delta.y());
@@ -66,10 +68,6 @@ void GraphicPolygonItem::paint(QPainter* painter, const QStyleOptionGraphicsItem
     painter->setPen(m_pen);
     painter->setBrush(m_brush);
     painter->drawPolygon(m_points);
-    //绘制变换原点
-    QPointF originPoint = transformOriginPoint();
-    painter->setBrush(Qt::red);
-    painter->drawEllipse(originPoint, 4, 4);
 
     if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
     {
@@ -77,6 +75,11 @@ void GraphicPolygonItem::paint(QPainter* painter, const QStyleOptionGraphicsItem
         painter->setPen(QPen(QColor(70,70,70), nPenWidth, Qt::DashLine)); //蓝色的外框
         painter->setBrush(Qt::NoBrush);
         painter->drawRect(m_boundingRect_selected);
+
+        //绘制变换原点
+        QPointF originPoint = transformOriginPoint();
+        painter->setBrush(Qt::red);
+        painter->drawEllipse(originPoint, 4, 4);
     }
 }
 
diff --git a/source/graphicsItem/graphicsRectItem.cpp b/source/graphicsItem/graphicsRectItem.cpp
index 43f439e..569a1cc 100644
--- a/source/graphicsItem/graphicsRectItem.cpp
+++ b/source/graphicsItem/graphicsRectItem.cpp
@@ -104,10 +104,6 @@ void GraphicsRectItem::paint(QPainter* painter, const QStyleOptionGraphicsItem*
     else
         painter->drawRect(m_boundingRect);
 
-    //绘制变换原点
-    QPointF originPoint = transformOriginPoint();
-    painter->setBrush(Qt::red);
-    painter->drawEllipse(originPoint, 4, 4);
 
     if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
     {
@@ -115,6 +111,11 @@ void GraphicsRectItem::paint(QPainter* painter, const QStyleOptionGraphicsItem*
         painter->setPen(QPen(QColor(70,70,70), nPenWidth, Qt::DashLine)); //蓝色的外框
         painter->setBrush(Qt::NoBrush);
         painter->drawRect(m_boundingRect_selected);
+
+        //绘制变换原点
+        QPointF originPoint = transformOriginPoint();
+        painter->setBrush(Qt::red);
+        painter->drawEllipse(originPoint, 4, 4);
     }
 }
 
diff --git a/source/mainwindow.cpp b/source/mainwindow.cpp
index 1cab47c..1c3491a 100644
--- a/source/mainwindow.cpp
+++ b/source/mainwindow.cpp
@@ -66,7 +66,7 @@ void CMainWindow::initializeDockUi()
     // Set central widget
     m_pDrawingPanel = new DrawingPanel();
     DesignerScene* designerScene = m_pDrawingPanel->getDesignerScene();
-    connect(designerScene, SIGNAL((QGraphicsItem*)), this, SLOT(onSignal_addItem(QGraphicsItem*)));
+    connect(designerScene, SIGNAL(signalAddItem(QGraphicsItem*)), this, SLOT(onSignal_addItem(QGraphicsItem*)));
     CDockWidget* CentralDockWidget = new CDockWidget("CentralWidget");
     CentralDockWidget->setWidget(m_pDrawingPanel);
     auto* CentralDockArea = DockManager->setCentralWidget(CentralDockWidget);