diff --git a/src/modelwidget.cpp b/src/modelwidget.cpp
index ec15b4f1..64fb4175 100644
--- a/src/modelwidget.cpp
+++ b/src/modelwidget.cpp
@@ -11,6 +11,8 @@
 
 bool ModelWidget::m_transparent = true;
 const QVector3D ModelWidget::m_cameraPosition = QVector3D(0, 0, -4.0);
+float ModelWidget::m_minZoomRatio = 5.0;
+float ModelWidget::m_maxZoomRatio = 90.0;
 
 ModelWidget::ModelWidget(QWidget *parent) :
     QOpenGLWidget(parent),
@@ -320,6 +322,18 @@ bool ModelWidget::inputWheelEventFromOtherWidget(QWheelEvent *event)
 void ModelWidget::zoom(float delta)
 {
     QMargins margins(delta, delta, delta, delta);
+    if (0 == m_modelInitialHeight) {
+        m_modelInitialHeight = height();
+    } else {
+        float ratio = (float)height() / m_modelInitialHeight;
+        if (ratio <= m_minZoomRatio) {
+            if (delta < 0)
+                return;
+        } else if (ratio >= m_maxZoomRatio) {
+            if (delta > 0)
+                return;
+        }
+    }
     setGeometry(geometry().marginsAdded(margins));
 }
 
diff --git a/src/modelwidget.h b/src/modelwidget.h
index 0e791c77..2e9d08a8 100644
--- a/src/modelwidget.h
+++ b/src/modelwidget.h
@@ -88,8 +88,11 @@ private:
     float m_mousePickRadius = 0.0;
     static bool m_transparent;
     static const QVector3D m_cameraPosition;
+    static float m_minZoomRatio;
+    static float m_maxZoomRatio;
     QPoint m_moveStartPos;
     QRect m_moveStartGeometry;
+    int m_modelInitialHeight = 0;
     std::pair<QVector3D, QVector3D> screenPositionToMouseRay(const QPoint &screenPosition);
 };