diff --git a/Include/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.h b/Include/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.h
index cf1afa1..e665190 100644
--- a/Include/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.h
+++ b/Include/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.h
@@ -6,6 +6,7 @@
 
 #include <QPointF>
 #include <QRectF>
+#include <QSize>
 #include <QString>
 #include <QStringList>
 #include <QVector>
@@ -47,6 +48,8 @@ public:
                        bool showMeasurementLabels);
     void showMessage(const QString& dataSetName, const QString& message);
 
+    virtual QSize sizeHint() const;
+
 private:
     void initializeRenderer(const QString& scalarTitle,
                             const QRectF& bounds,
diff --git a/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationDlg.cpp b/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationDlg.cpp
index 74e2415..7c8ccf2 100644
--- a/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationDlg.cpp
+++ b/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationDlg.cpp
@@ -344,8 +344,6 @@ nmWxPropertyInterpolationDlg::nmWxPropertyInterpolationDlg(
     setWindowTitle(interpolationText("Property Interpolation"));
     setWindowModality(Qt::NonModal);
     setModal(false);
-    setMinimumSize(500, 620);
-    resize(520, 820);
 
     // 合并连续编辑触发的刷新，避免每次数值变化都立即重新插值.
     m_pPreviewRefreshTimer = new QTimer(this);
diff --git a/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.cpp b/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.cpp
index cfc871a..67b0dd7 100644
--- a/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.cpp
+++ b/Src/nmNum/nmSubWxs/nmWxPropertyInterpolationPreviewDlg.cpp
@@ -1,8 +1,11 @@
-#include "nmWxPropertyInterpolationPreviewDlg.h"
+#include "nmWxPropertyInterpolationPreviewDlg.h"
 
+#include <QApplication>
 #include <QCoreApplication>
+#include <QDesktopWidget>
 #include <QHBoxLayout>
 #include <QPushButton>
+#include <QSizePolicy>
 #include <QVBoxLayout>
 #include <QVTKWidget.h>
 
@@ -96,15 +99,14 @@ nmWxPropertyInterpolationPreviewDlg::nmWxPropertyInterpolationPreviewDlg(
 {
     setWindowModality(Qt::NonModal);
     setModal(false);
-    setMinimumSize(900, 700);
-    resize(1200, 850);
 
     QVBoxLayout* mainLayout = new QVBoxLayout(this);
     mainLayout->setContentsMargins(8, 8, 8, 8);
     mainLayout->setSpacing(8);
 
     m_pVtkWidget = new QVTKWidget(this);
-    m_pVtkWidget->setMinimumSize(860, 640);
+    m_pVtkWidget->setSizePolicy(QSizePolicy::Expanding,
+                                QSizePolicy::Expanding);
     mainLayout->addWidget(m_pVtkWidget, 1);
 
     QHBoxLayout* buttonLayout = new QHBoxLayout;
@@ -120,6 +122,19 @@ nmWxPropertyInterpolationPreviewDlg::nmWxPropertyInterpolationPreviewDlg(
                   showMeasurementPoints, showMeasurementLabels);
 }
 
+QSize nmWxPropertyInterpolationPreviewDlg::sizeHint() const
+{
+    QDesktopWidget* desktop = QApplication::desktop();
+    if(desktop == NULL) {
+        return iDlgBase::sizeHint();
+    }
+
+    // 预览窗口随当前屏幕可用区域调整，避免固定像素尺寸在不同分辨率下失衡.
+    const QRect availableRect = desktop->availableGeometry(this);
+    return QSize(availableRect.width() * 1 / 2,
+                 availableRect.height() * 4 / 5);
+}
+
 void nmWxPropertyInterpolationPreviewDlg::updatePreview(
         const QString& dataSetName,
         const QString& scalarTitle,