diff --git a/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp b/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp
index 5c0acb0..4cc2ef3 100644
--- a/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp
+++ b/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp
@@ -17,7 +17,10 @@ void SimpleElement::loadSvgFile(const QString& filePath)
 	// TODO 样式问题
 	SvgFileLoader loader;
 	loader.loadSvgFile(filePath, painterPath);
-	qDebug() << "load svg file success " << painterPath.elementCount();
+	auto startPoint = static_cast<QPointF>(painterPath.elementAt(0));
+	auto endPoint = static_cast<QPointF>(painterPath.elementAt(painterPath.elementCount() - 1));
+	this->closed = startPoint == endPoint;
+	qDebug() << "load svg file success " << painterPath.elementCount() << (isClosed() ? "is" : "not") << "closed";
 }
 
 SimpleElement::SimpleElement(QJsonObject jsonSource) : jsonSource(jsonSource)
@@ -117,11 +120,21 @@ void SimpleElement::paint(QPainter* painter, QTransform transform, const LayerSt
 	painter->restore();
 }
 
+bool SimpleElement::isClosed() const
+{
+	return closed;
+}
+
 void GroupElement::paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles)
 {
 	sourceLayer->paint(painter, transform);
 }
 
+bool GroupElement::isClosed() const
+{
+	return false;
+}
+
 
 QPixmap SimpleElement::getPreview(QSize size)
 {
diff --git a/ArchitectureColoredPainting/src/Editor/GraphicElement.h b/ArchitectureColoredPainting/src/Editor/GraphicElement.h
index d0500b2..377b9e5 100644
--- a/ArchitectureColoredPainting/src/Editor/GraphicElement.h
+++ b/ArchitectureColoredPainting/src/Editor/GraphicElement.h
@@ -28,11 +28,14 @@ public:
     virtual PixelPath getPaintObject() const = 0;
     virtual PixelPath getPaintObject(const LayerStyleContainer& styles) const = 0;
     virtual void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) = 0;
+    virtual bool isClosed() const = 0;
     virtual QPixmap getPreview(QSize size) = 0;
 };
 
 class SimpleElement : public GraphicElement
 {
+private:
+    bool closed;
 public:
     QJsonObject jsonSource;
     // TODO: 改为ComposedPainterPath
@@ -48,6 +51,7 @@ public:
     PixelPath getPaintObject() const override;
     PixelPath getPaintObject(const LayerStyleContainer& styles) const override;
     void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) override;
+    bool isClosed() const override;
     QPixmap getPreview(QSize size) override;
 };
 
@@ -65,6 +69,7 @@ public:
     PixelPath getPaintObject(const LayerStyleContainer& styles) const override;
     void setSourceLayer(FolderLayerWrapper* sourceLayer);
     void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) override;
+    bool isClosed() const override;
     QPixmap getPreview(QSize size) override;
 	void collectReachable(std::set<LayerWrapper*>& set) const;
 };