diff --git a/DungeonShooting_Godot/prefab/ui/TileSetEditorCombination.tscn b/DungeonShooting_Godot/prefab/ui/TileSetEditorCombination.tscn
index 383b76c..c4f6702 100644
--- a/DungeonShooting_Godot/prefab/ui/TileSetEditorCombination.tscn
+++ b/DungeonShooting_Godot/prefab/ui/TileSetEditorCombination.tscn
@@ -89,6 +89,8 @@
 scale = Vector2(3, 3)
 mouse_filter = 2
 
+[node name="BrushRoot" type="Node2D" parent="HSplitContainer/VSplitContainer/LeftTop/MarginContainer/LeftTopBg/CombinationRoot"]
+
 [node name="Grid" type="ColorRect" parent="HSplitContainer/VSplitContainer/LeftTop/MarginContainer/LeftTopBg"]
 material = SubResource("ShaderMaterial_df7va")
 layout_mode = 1
diff --git a/DungeonShooting_Godot/src/framework/common/Utils.cs b/DungeonShooting_Godot/src/framework/common/Utils.cs
index b102450..563fe14 100644
--- a/DungeonShooting_Godot/src/framework/common/Utils.cs
+++ b/DungeonShooting_Godot/src/framework/common/Utils.cs
@@ -96,7 +96,7 @@
     /// </summary>
     /// <param name="value">原数值</param>
     /// <param name="step">吸附步长</param>
-    public static float Adsorption(float value, float step)
+    public static float Adsorption(this float value, float step)
     {
         var f = Mathf.Round(value / step);
         return f * step;
@@ -107,7 +107,7 @@
     /// </summary>
     /// <param name="value">原数值</param>
     /// <param name="step">吸附步长</param>
-    public static int Adsorption(float value, int step)
+    public static int Adsorption(this float value, int step)
     {
         var f = Mathf.RoundToInt(value / step);
         return f * step;
@@ -118,7 +118,7 @@
     /// </summary>
     /// <param name="value">原数值</param>
     /// <param name="step">吸附步长</param>
-    public static Vector2 Adsorption(Vector2 value, Vector2 step)
+    public static Vector2 Adsorption(this Vector2 value, Vector2 step)
     {
         var x = Mathf.Round(value.X / step.X);
         var y = Mathf.Round(value.Y / step.Y);
@@ -130,12 +130,58 @@
     /// </summary>
     /// <param name="value">原数值</param>
     /// <param name="step">吸附步长</param>
-    public static Vector2I Adsorption(Vector2 value, Vector2I step)
+    public static Vector2I Adsorption(this Vector2 value, Vector2I step)
     {
         var x = Mathf.RoundToInt(value.X / step.X);
         var y = Mathf.RoundToInt(value.Y / step.Y);
         return new Vector2I(x * step.X, y * step.Y);
     }
+    
+    /// <summary>
+    /// 根据步长按照 Floor() 函数吸附值
+    /// </summary>
+    /// <param name="value">原数值</param>
+    /// <param name="step">吸附步长</param>
+    public static float FloorAdsorption(this float value, float step)
+    {
+        var f = Mathf.Floor(value / step);
+        return f * step;
+    }
+    
+    /// <summary>
+    /// 根据步长按照 Floor() 函数吸附值
+    /// </summary>
+    /// <param name="value">原数值</param>
+    /// <param name="step">吸附步长</param>
+    public static int FloorAdsorption(this float value, int step)
+    {
+        var f = Mathf.FloorToInt(value / step);
+        return f * step;
+    }
+
+    /// <summary>
+    /// 根据步长按照 Floor() 函数吸附值
+    /// </summary>
+    /// <param name="value">原数值</param>
+    /// <param name="step">吸附步长</param>
+    public static Vector2 FloorAdsorption(this Vector2 value, Vector2 step)
+    {
+        var x = Mathf.Floor(value.X / step.X);
+        var y = Mathf.Floor(value.Y / step.Y);
+        return new Vector2(x * step.X, y * step.Y);
+    }
+    
+    /// <summary>
+    /// 根据步长按照 Floor() 函数吸附值
+    /// </summary>
+    /// <param name="value">原数值</param>
+    /// <param name="step">吸附步长</param>
+    public static Vector2I FloorAdsorption(this Vector2 value, Vector2I step)
+    {
+        var x = Mathf.FloorToInt(value.X / step.X);
+        var y = Mathf.FloorToInt(value.Y / step.Y);
+        return new Vector2I(x * step.X, y * step.Y);
+    }
 
     /// <summary>
     /// 字符串首字母小写
diff --git a/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/TileSetEditorCombination.cs b/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/TileSetEditorCombination.cs
index 9056d5b..3e5b17b 100644
--- a/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/TileSetEditorCombination.cs
+++ b/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/TileSetEditorCombination.cs
@@ -32,10 +32,32 @@
     }
 
     /// <summary>
+    /// 类型: <see cref="Godot.Node2D"/>, 路径: TileSetEditorCombination.HSplitContainer.VSplitContainer.LeftTop.MarginContainer.LeftTopBg.CombinationRoot.BrushRoot
+    /// </summary>
+    public class BrushRoot : UiNode<TileSetEditorCombinationPanel, Godot.Node2D, BrushRoot>
+    {
+        public BrushRoot(TileSetEditorCombinationPanel uiPanel, Godot.Node2D node) : base(uiPanel, node) {  }
+        public override BrushRoot Clone() => new (UiPanel, (Godot.Node2D)Instance.Duplicate());
+    }
+
+    /// <summary>
     /// 类型: <see cref="Godot.Control"/>, 路径: TileSetEditorCombination.HSplitContainer.VSplitContainer.LeftTop.MarginContainer.LeftTopBg.CombinationRoot
     /// </summary>
     public class CombinationRoot : UiNode<TileSetEditorCombinationPanel, Godot.Control, CombinationRoot>
     {
+        /// <summary>
+        /// 使用 Instance 属性获取当前节点实例对象, 节点类型: <see cref="Godot.Node2D"/>, 节点路径: TileSetEditorCombination.HSplitContainer.VSplitContainer.LeftTop.MarginContainer.LeftTopBg.BrushRoot
+        /// </summary>
+        public BrushRoot L_BrushRoot
+        {
+            get
+            {
+                if (_L_BrushRoot == null) _L_BrushRoot = new BrushRoot(UiPanel, Instance.GetNode<Godot.Node2D>("BrushRoot"));
+                return _L_BrushRoot;
+            }
+        }
+        private BrushRoot _L_BrushRoot;
+
         public CombinationRoot(TileSetEditorCombinationPanel uiPanel, Godot.Control node) : base(uiPanel, node) {  }
         public override CombinationRoot Clone() => new (UiPanel, (Godot.Control)Instance.Duplicate());
     }
@@ -548,6 +570,11 @@
 
 
     /// <summary>
+    /// 场景中唯一名称的节点, 节点类型: <see cref="Godot.Node2D"/>, 节点路径: TileSetEditorCombination.HSplitContainer.VSplitContainer.LeftTop.MarginContainer.LeftTopBg.CombinationRoot.BrushRoot
+    /// </summary>
+    public BrushRoot S_BrushRoot => L_HSplitContainer.L_VSplitContainer.L_LeftTop.L_MarginContainer.L_LeftTopBg.L_CombinationRoot.L_BrushRoot;
+
+    /// <summary>
     /// 场景中唯一名称的节点, 节点类型: <see cref="Godot.Control"/>, 节点路径: TileSetEditorCombination.HSplitContainer.VSplitContainer.LeftTop.MarginContainer.LeftTopBg.CombinationRoot
     /// </summary>
     public CombinationRoot S_CombinationRoot => L_HSplitContainer.L_VSplitContainer.L_LeftTop.L_MarginContainer.L_LeftTopBg.L_CombinationRoot;
diff --git a/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/CombinationCell.cs b/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/CombinationCell.cs
new file mode 100644
index 0000000..9bb9880
--- /dev/null
+++ b/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/CombinationCell.cs
@@ -0,0 +1,21 @@
+using Godot;
+
+namespace UI.TileSetEditorCombination;
+
+public partial class CombinationCell : Sprite2D
+{
+    public override void _Ready()
+    {
+        Centered = false;
+        RegionEnabled = true;
+    }
+
+    /// <summary>
+    /// 初始化数据, 设置纹理和显示的区域
+    /// </summary>
+    public void InitData(Texture2D texture, Vector2I texturePos)
+    {
+        Texture = texture;
+        RegionRect = new Rect2(texturePos * GameConfig.TileCellSize, GameConfig.TileCellSizeVector2I);
+    }
+}
\ No newline at end of file
diff --git a/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/TileEditCombination.cs b/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/TileEditCombination.cs
index 7b7cc8e..053a89d 100644
--- a/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/TileEditCombination.cs
+++ b/DungeonShooting_Godot/src/game/ui/tileSetEditorCombination/leftTop/TileEditCombination.cs
@@ -5,7 +5,13 @@
 
 public partial class TileEditCombination : GridBg<TileSetEditorCombination.LeftTopBg>
 {
-    private Dictionary<Vector2I, Vector2I> _brushData;
+    //kay: 代表原图中的坐标
+    private Dictionary<Vector2I, CombinationCell> _brushData = new Dictionary<Vector2I, CombinationCell>();
+    private Vector2I _brushOffset = Vector2I.Zero;
+    private int _xStart = 0;
+    private int _yStart = 0;
+    private int _xEnd = 0;
+    private int _yEnd = 0;
     
     public override void SetUiNode(IUiNode uiNode)
     {
@@ -17,21 +23,44 @@
         UiNode.UiPanel.AddEventListener(EventEnum.OnClearContainerCell, OnClearContainerCell);
     }
 
+    public override void _Process(double delta)
+    {
+        if (!UiNode.UiPanel.IsOpen)
+        {
+            return;
+        }
+
+        UiNode.L_CombinationRoot.L_BrushRoot.Instance.Position = UiNode.L_CombinationRoot.Instance
+            .GetLocalMousePosition().FloorAdsorption(GameConfig.TileCellSizeVector2I);
+    }
+
     private void OnSelectContainerCell(object obj)
     {
-        if (obj is Vector2I cell)
+        if (obj is Vector2I cell && !_brushData.ContainsKey(cell))
         {
-            var src = UiNode.UiPanel.EditorPanel.TextureImage;
-            var image = Image.Create(GameConfig.TileCellSize, GameConfig.TileCellSize, false, Image.Format.Rgba8);
-            image.BlitRect(src,
-                new Rect2I(cell * GameConfig.TileCellSizeVector2I, GameConfig.TileCellSize, GameConfig.TileCellSize),
-                Vector2I.Zero);
-            //UiNode.L_CombinationRoot.L_TextureRect.Instance.Texture = ImageTexture.CreateFromImage(image);;
+            var cellData = new CombinationCell();
+            var pos = cell * GameConfig.TileCellSize + _brushOffset;
+            cellData.Position = pos;
+            cellData.InitData(UiNode.UiPanel.EditorPanel.Texture, cell);
+            UiNode.L_CombinationRoot.L_BrushRoot.AddChild(cellData);
+            _brushData.Add(cell, cellData);
+            
+            //计算起始点和终点
+            //if (pos.X < _xStart || pos.X > _xEnd || pos.) 
         }
     }
     
     private void OnClearContainerCell(object obj)
     {
-        
+        foreach (var keyValuePair in _brushData)
+        {
+            keyValuePair.Value.QueueFree();
+        }
+        _brushData.Clear();
+        _brushOffset = Vector2I.Zero;
+        _xStart = 0;
+        _yStart = 0;
+        _xEnd = 0;
+        _yEnd = 0;
     }
 }
\ No newline at end of file