diff --git a/Assets/Editor/Entity/IEntity.cs b/Assets/Editor/Entity/IEntity.cs
index e97ffa3..54b1d51 100644
--- a/Assets/Editor/Entity/IEntity.cs
+++ b/Assets/Editor/Entity/IEntity.cs
@@ -70,7 +70,7 @@ namespace UguiToolkit.Editor
             rtf.sizeDelta = new Vector2(m_elementInfo.w, m_elementInfo.h);
 
             m_selectionImg = go.AddComponent<UnityEngine.UI.Image>();
-            m_selectionImg.color = new Color(0, 1, 0, 0.2f);
+            m_selectionImg.color = new Color(0, 1, 0, 0.3f);
         }
     }
 }
diff --git a/Assets/Editor/Entity/ImageEntity.cs b/Assets/Editor/Entity/ImageEntity.cs
index c9d8666..dadf02c 100644
--- a/Assets/Editor/Entity/ImageEntity.cs
+++ b/Assets/Editor/Entity/ImageEntity.cs
@@ -41,7 +41,7 @@ namespace UguiToolkit.Editor
 
                 Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));
                 m_previewImage.sprite = sprite;
-                m_previewImage.color = new Color(1, 1, 1, 0.7f);
+                m_previewImage.color = new Color(1, 1, 1, 0.5f);
                 m_previewImage.SetNativeSize();
             }
             else
diff --git a/Assets/Editor/Entity/TextMeshProEntity.cs b/Assets/Editor/Entity/TextMeshProEntity.cs
index ffda10b..e2b1fbc 100644
--- a/Assets/Editor/Entity/TextMeshProEntity.cs
+++ b/Assets/Editor/Entity/TextMeshProEntity.cs
@@ -1,5 +1,4 @@
 #if UNITY_EDITOR
-using OfficeOpenXml.FormulaParsing.Excel.Functions.Math;
 using Sirenix.OdinInspector;
 using Sirenix.Utilities;
 using System.Linq;
diff --git a/Assets/Editor/Manager/EntityManager.cs b/Assets/Editor/Manager/EntityManager.cs
index 25875b6..87c6b6e 100644
--- a/Assets/Editor/Manager/EntityManager.cs
+++ b/Assets/Editor/Manager/EntityManager.cs
@@ -1,10 +1,12 @@
 #if UNITY_EDITOR
 using Sirenix.OdinInspector;
 using System.Collections.Generic;
+using System.Globalization;
 using System.IO;
 using UnityEditor;
 using UnityEditor.SceneManagement;
 using UnityEngine;
+using UnityEngine.UI;
 
 namespace UguiToolkit.Editor
 {
@@ -13,6 +15,7 @@ namespace UguiToolkit.Editor
     {
         private PanelCache m_panelCache;
         private Transform m_entityRoot;
+        private Transform m_background;
         private GameObject m_lastSelectionGo;
         private IEntity m_lastSelectionEntity;
         private GameObject m_curSelectionGo;
@@ -26,11 +29,11 @@ namespace UguiToolkit.Editor
 
         private StageManager m_stageManager;
         private HashSet<string> m_checkImgPaths;
-        private float m_lastCheckTime;
+        private float m_lastCheckTime = 0f;
         private bool m_useTMP;
-        private const float m_checkInterval = 2f;
-
+        private const float m_checkInterval = 3f;
 
+        
         private void OnEnable()
         {
             var globalMng = GlobalManager.Instance;
@@ -92,19 +95,24 @@ namespace UguiToolkit.Editor
             }
 
             // 检测是否有image变更，及时更新PanelCache
-            m_lastCheckTime += Time.deltaTime;
-            if (m_lastCheckTime > m_checkInterval)
+            m_lastCheckTime -= Time.deltaTime;
+            CheckPanelCache();
+        }
+
+        private void CheckPanelCache()
+        {
+            if (m_lastCheckTime <= 0)
             {
-                m_lastCheckTime = 0;
+                m_lastCheckTime = m_checkInterval;
 
                 if (m_checkImgPaths != null)
                 {
                     var images = m_stageManager.PrefabContentsRoot.GetComponentsInChildren<UnityEngine.UI.Image>();
                     foreach (var image in images)
                     {
-                        if (image.transform.parent == m_entityRoot || image.sprite == null) continue;
+                        if (image.transform.parent == m_entityRoot || image.transform.parent == m_background || image.sprite == null) continue;
                         var srcImgPath = AssetDatabase.GetAssetPath(image.sprite);
-                        if (!m_checkImgPaths.Contains(srcImgPath))
+                        if (!string.IsNullOrEmpty(srcImgPath) && !m_checkImgPaths.Contains(srcImgPath))
                         {
                             var srcImgDirPath = System.IO.Path.GetDirectoryName(srcImgPath);
                             string projectPath = Directory.GetParent(Application.dataPath).FullName;
@@ -122,6 +130,44 @@ namespace UguiToolkit.Editor
             }
         }
 
+        private void InitBackground()
+        {
+            if (m_background) DestroyImmediate(m_background.gameObject);
+
+            var go = new GameObject("__background__", typeof(RectTransform));
+            UpdateHierarchyOfEntity(false, go);
+            m_background = go.transform;
+            m_background.SetParent(transform);
+            m_background.localPosition = Vector3.zero;
+            m_background.localRotation = Quaternion.identity;
+            m_background.localScale = Vector3.one;
+
+            var canvas = m_background.gameObject.AddComponent<Canvas>();
+            canvas.pixelPerfect = true;
+            canvas.overrideSorting = true;
+            canvas.sortingOrder = -100;
+
+            var imgGo = new GameObject("_", typeof(RectTransform));
+            var imgTf = imgGo.transform;
+            imgTf.SetParent(m_background);
+            imgTf.localPosition = Vector3.zero;
+            imgTf.localRotation = Quaternion.identity;
+            imgTf.localScale = Vector3.one;
+            var img = imgGo.AddComponent<Image>();
+            var imgPath = System.IO.Path.Join(m_panelCache.TargetImgDirPath, "__background__.png");
+            if (System.IO.File.Exists(imgPath))
+            {
+                byte[] fileData = System.IO.File.ReadAllBytes(imgPath);
+                Texture2D texture = new Texture2D(2, 2);
+                texture.LoadImage(fileData); // 加载图片数据到Texture2D
+
+                Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));
+                img.sprite = sprite;
+                img.color = new Color(1, 1, 1, 0.4f);
+                img.SetNativeSize();
+            }
+        }
+
         private void InitCheckImgPaths()
         { 
             if (m_checkImgPaths == null) m_checkImgPaths = new HashSet<string>();
@@ -273,11 +319,15 @@ namespace UguiToolkit.Editor
             // 创建所有实例
             CreateAllEntity();
             InitCheckImgPaths();
+            InitBackground();
+
+            CheckPanelCache();
         }
 
         private void OnUpdateHierarchyOfEntityAllEntity(bool show)
         {
             UpdateHierarchyOfEntity(show, m_entityRoot.gameObject);
+            UpdateHierarchyOfEntity(show, m_background.gameObject);
             foreach (var entity in m_imageEntities) UpdateHierarchyOfEntity(show, entity.gameObject);
             foreach (var entity in m_textEntities) UpdateHierarchyOfEntity(show, entity.gameObject);
         }