diff --git a/AIStudio.Wpf.DiagramApp/ViewModels/FlowchartViewModel.cs b/AIStudio.Wpf.DiagramApp/ViewModels/FlowchartViewModel.cs
index 17deef4..3294b14 100644
--- a/AIStudio.Wpf.DiagramApp/ViewModels/FlowchartViewModel.cs
+++ b/AIStudio.Wpf.DiagramApp/ViewModels/FlowchartViewModel.cs
@@ -102,6 +102,26 @@ namespace AIStudio.Wpf.Flowchart
             ConnectionViewModel connector10 = new ConnectionViewModel(coend.BottomConnector, end.TopConnector, _service.DrawModeViewModel.LineDrawMode, _service.DrawModeViewModel.LineRouterMode);
             DiagramViewModel.Add(connector10);
 
+            TextDesignerItemViewModel despcription = new TextDesignerItemViewModel()
+            {
+                Name = nameof(despcription),
+                Left = 260,
+                Top = 60,
+                ItemWidth = 300,
+                ItemHeight = 150,
+                Text = @"
+      一个简易的OA审批流程
+      1.主管审批为or审批，任意一个审批即可；
+      2.分管领导为and审批，需要审批两次；
+      3.财务审批为or审批，任意一个审批即可；
+      4.人力审批为or审批，任意一个审批即可；
+注意：为了模拟审批，双击节点可以进行审批；请双击主管审批、分管领导、财务审批、人力审批、进行效果查看。"
+            };
+            despcription.FontViewModel.HorizontalAlignment = HorizontalAlignment.Left;
+            despcription.FontViewModel.VerticalAlignment = VerticalAlignment.Top;
+            despcription.FontViewModel.FontColor = Colors.Blue;
+            DiagramViewModel.Add(despcription);
+
             FlowchartService.InitData(DiagramViewModel.Items.OfType<FlowNode>().ToList(), DiagramViewModel.Items.OfType<ConnectionViewModel>().ToList(), DiagramViewModel, true);
         }
   
diff --git a/AIStudio.Wpf.DiagramApp/ViewModels/MindViewModel.cs b/AIStudio.Wpf.DiagramApp/ViewModels/MindViewModel.cs
index 00cf960..3660545 100644
--- a/AIStudio.Wpf.DiagramApp/ViewModels/MindViewModel.cs
+++ b/AIStudio.Wpf.DiagramApp/ViewModels/MindViewModel.cs
@@ -59,7 +59,14 @@ namespace AIStudio.Wpf.Flowchart
         {
             get
             {
-                return SubType.ToEnum<MindType>();
+                if (SubType == null)
+                {
+                    return MindType.Mind;
+                }
+                else
+                {
+                    return SubType.ToEnum<MindType>();
+                }
             }
         }
 
diff --git a/AIStudio.Wpf.DiagramDesigner/Geometrys/PointBase.cs b/AIStudio.Wpf.DiagramDesigner/Geometrys/PointBase.cs
index 8cdfbfc..2ac36aa 100644
--- a/AIStudio.Wpf.DiagramDesigner/Geometrys/PointBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Geometrys/PointBase.cs
@@ -181,8 +181,8 @@ namespace AIStudio.Wpf.DiagramDesigner.Geometrys
         /// <param name='point2'>The second PointBase to compare</param>
         public static bool Equals(PointBase point1, PointBase point2)
         {
-            return point1.X.Equals(point2.X) &&
-                   point1.Y.Equals(point2.Y);
+            return Math.Abs(point1.X - point2.X) < 0.01f &&
+                   Math.Abs(point1.Y - point2.Y) < 0.01f;
         }
 
         /// <summary>
diff --git a/AIStudio.Wpf.DiagramDesigner/PathGenerators/PathGenerators.Boundary.cs b/AIStudio.Wpf.DiagramDesigner/PathGenerators/PathGenerators.Boundary.cs
index d01826a..2d226c7 100644
--- a/AIStudio.Wpf.DiagramDesigner/PathGenerators/PathGenerators.Boundary.cs
+++ b/AIStudio.Wpf.DiagramDesigner/PathGenerators/PathGenerators.Boundary.cs
@@ -53,12 +53,12 @@ namespace AIStudio.Wpf.DiagramDesigner
             var p0 = GetFirstSegment(source, sourceOrientation, gridCellSize, gridMargin);
             var p1 = GetFirstSegment(sink, sinkOrientation, gridCellSize, gridMargin);
 
-            if (p0 == p1)
+            if (p0.Equals(p1))
                 return points;
 
             var p2 = new PointBase(GetNearestCross(p0.X, p1.X, gridCellSize.Width, gridMargin.Width), GetNearestCross(p0.Y, p1.Y, gridCellSize.Height, gridMargin.Height));
             var p3 = new PointBase(GetNearestCross(p1.X, p0.X, gridCellSize.Width, gridMargin.Width), GetNearestCross(p1.Y, p0.Y, gridCellSize.Height, gridMargin.Height));
-            if (p2 == p3)
+            if (p2.Equals(p3))
             {
                 points.Add(p0);
                 points.Add(p2);
@@ -93,12 +93,12 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         public static double GetNearestCross(double a, double b, double cellSize, double margin)
         {
-            if (Math.Abs(a - b) < 0.0001 && (int)((a - margin)/ cellSize) == ((a - margin) / cellSize))
+            if (Math.Abs(a - b) < 0.0001 && (int)(Math.Round((a - margin)/ cellSize, 3)) == (Math.Round((a - margin) / cellSize,3)))
                 return a;
             else if (a < b)
-                return Math.Ceiling((a - margin) / cellSize) * cellSize + margin;
+                return Math.Ceiling(Math.Round((a - margin) / cellSize, 3)) * cellSize + margin;
             else
-                return Math.Floor((a - margin) / cellSize) * cellSize + margin;
+                return Math.Floor(Math.Round((a - margin) / cellSize, 3)) * cellSize + margin;
         }
 
         public static PointBase SegmentMiddlePoint(PointBase p1, PointBase p2)
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DesignerItemViewModelBase.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DesignerItemViewModelBase.cs
index 7290705..3014f78 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DesignerItemViewModelBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DesignerItemViewModelBase.cs
@@ -192,6 +192,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         private double _itemWidth = 65;
         [CanDo]
+        [Browsable(true)]
         public double ItemWidth
         {
             get
@@ -210,6 +211,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         private double _itemHeight = 65;       
         [CanDo]
+        [Browsable(true)]
         public double ItemHeight
         {
             get
@@ -361,6 +363,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         private double _left;
         [CanDo]
+        [Browsable(true)]
         public double Left
         {
             get
@@ -375,6 +378,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         private double _top;
         [CanDo]
+        [Browsable(true)]
         public double Top
         {
             get
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs
index e3ab1bb..336a23e 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs
@@ -125,6 +125,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             this.IsGroup = designerbase.IsGroup;
             this.ZIndex = designerbase.ZIndex;
             this.Text = designerbase.Text;
+            this.Name = designerbase.Name;
 
             ColorViewModel = CopyHelper.Mapper(designerbase.ColorItem);
             FontViewModel = CopyHelper.Mapper<FontViewModel, FontItem>(designerbase.FontItem);