diff --git a/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml b/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
index 225d59f..c0a166f 100644
--- a/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
+++ b/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
@@ -1499,7 +1499,7 @@
                                 <Path Width="10" Height="10" Stretch="Uniform" Fill="Black" Data="M17,9.17a1,1,0,0,0-1.41,0L12,12.71,8.46,9.17a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42l4.24,4.24a1,1,0,0,0,1.42,0L17,10.59A1,1,0,0,0,17,9.17Z"></Path>
                             </Button>
                             <Line X1="0" Y1="0" X2="150" Y2="0" Stroke="Gray"  StrokeThickness="0.5" VerticalAlignment="Bottom" Grid.ColumnSpan="3"></Line>
-                            <TextBlock Grid.Row="1" Grid.ColumnSpan="3" Text="{Binding PageViewModel.DiagramViewModel.SearchInfo}"/>
+                            <TextBlock Grid.Row="1" Grid.ColumnSpan="3" Margin="2,0,0,0" VerticalAlignment="Center" Text="{Binding PageViewModel.DiagramViewModel.SearchInfo}"/>
                         </Grid>
                     </Border>
                 </Fluent:RibbonGroupBox>
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramViewModel.cs
index 2d68145..48dab3c 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramViewModel.cs
@@ -592,7 +592,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get
             {
-                return _searchText;
+                return _searchInfo;
             }
             set
             {
@@ -2645,7 +2645,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         private void ExecutedSearchDownCommand(object obj)
         {
-            if (obj != null)
+            if (!string.IsNullOrEmpty(obj?.ToString()))
             {
                 var selecteddesign = SelectedItem as DesignerItemViewModelBase;
                 var searchitems = Items.OfType<DesignerItemViewModelBase>().Where(p => p.Text?.Contains(obj.ToString()) == true).ToList();
diff --git a/AIStudio.Wpf.Mind/Controls/ToolBoxControl.xaml b/AIStudio.Wpf.Mind/Controls/ToolBoxControl.xaml
index 315bbc9..189ff8e 100644
--- a/AIStudio.Wpf.Mind/Controls/ToolBoxControl.xaml
+++ b/AIStudio.Wpf.Mind/Controls/ToolBoxControl.xaml
@@ -679,7 +679,7 @@
                                 <Path Width="10" Height="10" Stretch="Uniform" Fill="Black" Data="M17,9.17a1,1,0,0,0-1.41,0L12,12.71,8.46,9.17a1,1,0,0,0-1.41,0,1,1,0,0,0,0,1.42l4.24,4.24a1,1,0,0,0,1.42,0L17,10.59A1,1,0,0,0,17,9.17Z"></Path>
                             </Button>
                             <Line X1="0" Y1="0" X2="150" Y2="0" Stroke="Gray"  StrokeThickness="0.5" VerticalAlignment="Bottom" Grid.ColumnSpan="3"></Line>
-                            <TextBlock Grid.Row="1" Grid.ColumnSpan="3" Text="{Binding SearchInfo}"/>
+                            <TextBlock Grid.Row="1" Grid.ColumnSpan="3" Margin="2,0,0,0" VerticalAlignment="Center" Text="{Binding SearchInfo}" />
                         </Grid>
                     </Border>
                 </StackPanel>
diff --git a/AIStudio.Wpf.Mind/Helpers/DirectoryLayout.cs b/AIStudio.Wpf.Mind/Helpers/DirectoryLayout.cs
index f385005..92b0ce9 100644
--- a/AIStudio.Wpf.Mind/Helpers/DirectoryLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/DirectoryLayout.cs
@@ -138,8 +138,10 @@ namespace AIStudio.Wpf.Mind.Helpers
         {
             if (mindNode.NodeLevel == 0)
             {
-                double left = mindNode.MiddlePosition.X - Math.Max(mindNode.DesiredSize.Width, mindNode.Children.SumOrDefault(p => p.DesiredSize.Width)) / 2;
-                double top = mindNode.MiddlePosition.Y + mindNode.ItemHeight / 2 + mindNode.Spacing.Height;
+                mindNode.DesiredPosition = mindNode.Position;
+
+                double left = mindNode.DesiredPosition.X + mindNode.ItemWidth / 2 - Math.Max(mindNode.DesiredSize.Width, mindNode.Children.SumOrDefault(p => p.DesiredSize.Width)) / 2;
+                double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight + mindNode.Spacing.Height;
                 if (mindNode.Children?.Count > 0)
                 {
                     foreach (var child in mindNode.Children)
@@ -159,14 +161,13 @@ namespace AIStudio.Wpf.Mind.Helpers
                         connector?.SetVisible(child.Visible);
                     }
                 }
-
-                mindNode.DesiredPosition = mindNode.Position;
+               
                 mindNode.Offset = new PointBase();//修正后归0
             }
             else
             {
-                double left = mindNode.DesiredMiddlePosition.X;
-                double top = mindNode.DesiredMiddlePosition.Y + mindNode.ItemHeight / 2 + mindNode.Spacing.Height;
+                double left = mindNode.DesiredPosition.X + mindNode.ItemWidth / 2;
+                double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight + mindNode.Spacing.Height;
                 if (mindNode.Children?.Count > 0)
                 {
                     foreach (var child in mindNode.Children)
diff --git a/AIStudio.Wpf.Mind/Helpers/FishBoneLayout.cs b/AIStudio.Wpf.Mind/Helpers/FishBoneLayout.cs
index d3de693..cf07058 100644
--- a/AIStudio.Wpf.Mind/Helpers/FishBoneLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/FishBoneLayout.cs
@@ -176,9 +176,11 @@ namespace AIStudio.Wpf.Mind.Helpers
         {
             if (mindNode.NodeLevel == 0)
             {
+                mindNode.DesiredPosition = mindNode.Position;
+
                 var tops = mindNode.Children.Where(p => p.ConnectorOrientation == ConnectorOrientation.BottomLeft).ToList();
-                double topleft = mindNode.MiddlePosition.X + mindNode.ItemWidth / 2 + mindNode.Spacing.Width;
-                double toptop = mindNode.MiddlePosition.Y - mindNode.ItemHeight / 2 - mindNode.Spacing.Height;
+                double topleft = mindNode.DesiredPosition.X + mindNode.ItemWidth  + mindNode.Spacing.Width;
+                double toptop = mindNode.DesiredPosition.Y - mindNode.Spacing.Height;
 
                 if (mindNode.Children?.Count > 0)
                 {
@@ -201,8 +203,8 @@ namespace AIStudio.Wpf.Mind.Helpers
 
                 var bottomoffset = mindNode.Spacing.Width / 2;
                 var bottoms = mindNode.Children.Where(p => p.ConnectorOrientation == ConnectorOrientation.TopLeft).ToList();
-                double bottomleft = mindNode.MiddlePosition.X + mindNode.ItemWidth / 2 + mindNode.Spacing.Width + bottomoffset;
-                double bottomtop = mindNode.MiddlePosition.Y + mindNode.ItemHeight / 2 + mindNode.Spacing.Height;
+                double bottomleft = mindNode.DesiredPosition.X + mindNode.ItemWidth + mindNode.Spacing.Width + bottomoffset;
+                double bottomtop = mindNode.DesiredPosition.Y + mindNode.ItemHeight + mindNode.Spacing.Height;
 
                 if (mindNode.Children?.Count > 0)
                 {
@@ -222,8 +224,7 @@ namespace AIStudio.Wpf.Mind.Helpers
                         connector?.SetVisible(child.Visible);
                     }
                 }
-
-                mindNode.DesiredPosition = mindNode.Position;
+            
                 mindNode.Offset = new PointBase();//修正后归0
             }
             else if (mindNode.NodeLevel == 1)
@@ -281,8 +282,8 @@ namespace AIStudio.Wpf.Mind.Helpers
             {
                 if (mindNode.GetLevel1Node().ConnectorOrientation == ConnectorOrientation.BottomLeft)
                 {
-                    double left = mindNode.DesiredMiddlePosition.X;
-                    double top = mindNode.DesiredMiddlePosition.Y + mindNode.ItemHeight / 2 + mindNode.Spacing.Height;
+                    double left = mindNode.DesiredPosition.X + mindNode.ItemWidth / 2;
+                    double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight + mindNode.Spacing.Height;
                     if (mindNode.Children?.Count > 0)
                     {
                         foreach (var child in mindNode.Children)
@@ -304,8 +305,8 @@ namespace AIStudio.Wpf.Mind.Helpers
                 }
                 else
                 {
-                    double left = mindNode.DesiredMiddlePosition.X;
-                    double bottom = mindNode.DesiredMiddlePosition.Y - mindNode.ItemHeight / 2 - mindNode.Spacing.Height;
+                    double left = mindNode.DesiredPosition.X + mindNode.ItemWidth / 2;
+                    double bottom = mindNode.DesiredPosition.Y - mindNode.Spacing.Height;
                     if (mindNode.Children?.Count > 0)
                     {
                         foreach (var child in mindNode.Children)
diff --git a/AIStudio.Wpf.Mind/Helpers/LogicalLayout.cs b/AIStudio.Wpf.Mind/Helpers/LogicalLayout.cs
index 9f82c85..2ca8f9a 100644
--- a/AIStudio.Wpf.Mind/Helpers/LogicalLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/LogicalLayout.cs
@@ -131,8 +131,8 @@ namespace AIStudio.Wpf.Mind.Helpers
                 mindNode.DesiredPosition = mindNode.Position;
             }
 
-            double left = mindNode.DesiredMiddlePosition.X + mindNode.ItemWidth / 2 + mindNode.Spacing.Width;
-            double top = mindNode.DesiredMiddlePosition.Y - Math.Min(mindNode.DesiredSize.Height, mindNode.Children.SumOrDefault(p => p.DesiredSize.Height)) / 2;
+            double left = mindNode.DesiredPosition.X + mindNode.ItemWidth + mindNode.Spacing.Width;
+            double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight / 2 - Math.Min(mindNode.DesiredSize.Height, mindNode.Children.SumOrDefault(p => p.DesiredSize.Height)) / 2;
             if (mindNode.Children?.Count > 0)
             {
                 foreach (var child in mindNode.Children)
diff --git a/AIStudio.Wpf.Mind/Helpers/MindLayout.cs b/AIStudio.Wpf.Mind/Helpers/MindLayout.cs
index df94ccb..fa884f1 100644
--- a/AIStudio.Wpf.Mind/Helpers/MindLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/MindLayout.cs
@@ -143,11 +143,13 @@ namespace AIStudio.Wpf.Mind.Helpers
         {
             if (mindNode.NodeLevel == 0)
             {
+                mindNode.DesiredPosition = mindNode.Position;
+
                 if (mindNode.Children?.Count > 0)
                 {
                     var rights = mindNode.Children.Where(p => p.ConnectorOrientation == ConnectorOrientation.Left).ToList();
-                    double left = mindNode.MiddlePosition.X + mindNode.ItemWidth / 2 + mindNode.Spacing.Width;
-                    double lefttop = mindNode.MiddlePosition.Y - Math.Min(mindNode.DesiredSize.Height, rights.SumOrDefault(p => p.DesiredSize.Height)) / 2;
+                    double left = mindNode.DesiredPosition.X + mindNode.ItemWidth  + mindNode.Spacing.Width;
+                    double lefttop = mindNode.DesiredPosition.Y + mindNode.ItemHeight / 2 - Math.Min(mindNode.DesiredSize.Height, rights.SumOrDefault(p => p.DesiredSize.Height)) / 2;
                     foreach (var child in rights)
                     {
                         child.Offset = new PointBase(child.Offset.X - child.RootNode.Offset.X, child.Offset.Y - child.RootNode.Offset.Y);
@@ -166,8 +168,8 @@ namespace AIStudio.Wpf.Mind.Helpers
                     }
 
                     var lefts = mindNode.Children.Where(p => p.ConnectorOrientation == ConnectorOrientation.Right).ToList();
-                    double right = mindNode.MiddlePosition.X - mindNode.ItemWidth / 2 - mindNode.Spacing.Width;
-                    double righttop = mindNode.MiddlePosition.Y - Math.Min(mindNode.DesiredSize.Height, lefts.SumOrDefault(p => p.DesiredSize.Height)) / 2;
+                    double right = mindNode.DesiredPosition.X - mindNode.Spacing.Width;
+                    double righttop = mindNode.DesiredPosition.Y + mindNode.ItemHeight / 2 - Math.Min(mindNode.DesiredSize.Height, lefts.SumOrDefault(p => p.DesiredSize.Height)) / 2;
                     foreach (var child in lefts)
                     {
                         child.Offset = new PointBase(child.Offset.X - child.RootNode.Offset.X, child.Offset.Y - child.RootNode.Offset.Y);
@@ -184,16 +186,15 @@ namespace AIStudio.Wpf.Mind.Helpers
                         connector?.SetVisible(child.Visible);
                     }
                 }
-
-                mindNode.DesiredPosition = mindNode.Position;                
+                
                 mindNode.Offset = new PointBase();//修正后归0
             }
             else
             {
                 if (mindNode.GetLevel1Node().ConnectorOrientation == ConnectorOrientation.Left)
                 {
-                    double left = mindNode.DesiredMiddlePosition.X + mindNode.ItemWidth / 2 + mindNode.Spacing.Width;
-                    double top = mindNode.DesiredMiddlePosition.Y - Math.Min(mindNode.DesiredSize.Height, mindNode.Children.SumOrDefault(p => p.DesiredSize.Height)) / 2;
+                    double left = mindNode.DesiredPosition.X + mindNode.ItemWidth + mindNode.Spacing.Width;
+                    double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight / 2 - Math.Min(mindNode.DesiredSize.Height, mindNode.Children.SumOrDefault(p => p.DesiredSize.Height)) / 2;
                     if (mindNode.Children?.Count > 0)
                     {
                         foreach (var child in mindNode.Children)
@@ -215,8 +216,8 @@ namespace AIStudio.Wpf.Mind.Helpers
                 }
                 else
                 {
-                    double right = mindNode.DesiredMiddlePosition.X - mindNode.ItemWidth / 2 - mindNode.Spacing.Width;
-                    double top = mindNode.DesiredMiddlePosition.Y - Math.Min(mindNode.DesiredSize.Height, mindNode.Children.SumOrDefault(p => p.DesiredSize.Height)) / 2;
+                    double right = mindNode.DesiredPosition.X  - mindNode.Spacing.Width;
+                    double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight / 2 - Math.Min(mindNode.DesiredSize.Height, mindNode.Children.SumOrDefault(p => p.DesiredSize.Height)) / 2;
                     if (mindNode.Children?.Count > 0)
                     {
                         foreach (var child in mindNode.Children)
diff --git a/AIStudio.Wpf.Mind/Helpers/OrganizationalLayout.cs b/AIStudio.Wpf.Mind/Helpers/OrganizationalLayout.cs
index 451264a..f579490 100644
--- a/AIStudio.Wpf.Mind/Helpers/OrganizationalLayout.cs
+++ b/AIStudio.Wpf.Mind/Helpers/OrganizationalLayout.cs
@@ -133,8 +133,8 @@ namespace AIStudio.Wpf.Mind.Helpers
                 mindNode.DesiredPosition = mindNode.Position;
             }
 
-            double left = mindNode.DesiredMiddlePosition.X - Math.Max(mindNode.DesiredSize.Width, mindNode.Children.SumOrDefault(p => p.DesiredSize.Width)) / 2;
-            double top = mindNode.DesiredMiddlePosition.Y + mindNode.ItemHeight / 2 + mindNode.Spacing.Height;
+            double left = mindNode.DesiredPosition.X + mindNode.ItemWidth / 2 - Math.Max(mindNode.DesiredSize.Width, mindNode.Children.SumOrDefault(p => p.DesiredSize.Width)) / 2;
+            double top = mindNode.DesiredPosition.Y + mindNode.ItemHeight + mindNode.Spacing.Height;
             if (mindNode.Children?.Count > 0)
             {
                 foreach (var child in mindNode.Children)