diff --git a/scripts/Config.cs b/scripts/Config.cs
index 1943972..ffe96c9 100644
--- a/scripts/Config.cs
+++ b/scripts/Config.cs
@@ -216,6 +216,15 @@ public static class Config
         /// </summary>
         public const string TimeInterval = "TimeInterval";
     }
+    
+    public class ZIndexManager
+    {
+        /// <summary>
+        /// <para>Floating icon</para>
+        /// <para>悬浮图标</para>
+        /// </summary>
+        public const int FloatingIcon = 1;
+    }
 
     /// <summary>
     /// <para>Item data changes the event type</para>
diff --git a/scripts/furniture/GuiFurniture.cs b/scripts/furniture/GuiFurniture.cs
index ebb5cc7..e8a585c 100644
--- a/scripts/furniture/GuiFurniture.cs
+++ b/scripts/furniture/GuiFurniture.cs
@@ -94,6 +94,7 @@ public partial class GuiFurniture : Furniture
 
     public override void _PhysicsProcess(double delta)
     {
+        base._PhysicsProcess(delta);
         if (GameSceneDepend.Player == null || !_playerInRange || !_hasMouseOver)
         {
             return;
diff --git a/scripts/inventory/ItemSlotNode.cs b/scripts/inventory/ItemSlotNode.cs
index 48fa874..d9a58b8 100644
--- a/scripts/inventory/ItemSlotNode.cs
+++ b/scripts/inventory/ItemSlotNode.cs
@@ -49,6 +49,7 @@ public partial class ItemSlotNode : MarginContainer, IItemDisplay
         textureRect.ExpandMode = _iconTextureRect.ExpandMode;
         textureRect.Size = _iconTextureRect.Size;
         textureRect.Texture = _iconTextureRect.Texture;
+        textureRect.ZIndex = Config.ZIndexManager.FloatingIcon;
         SetDragPreview(textureRect);
         return Variant.CreateFrom(this);
     }
diff --git a/scripts/inventory/PlaceholderItem.cs b/scripts/inventory/PlaceholderItem.cs
index e7a7f1d..4ae581d 100644
--- a/scripts/inventory/PlaceholderItem.cs
+++ b/scripts/inventory/PlaceholderItem.cs
@@ -48,11 +48,9 @@ public class PlaceholderItem : IItem
 
     public void Use(Node2D? owner, Vector2 targetGlobalPosition)
     {
-        throw new System.NotImplementedException();
     }
 
     public void OnThrow(Vector2 velocity)
     {
-        throw new System.NotImplementedException();
     }
 }
\ No newline at end of file
diff --git a/scripts/inventory/UniversalItemContainer.cs b/scripts/inventory/UniversalItemContainer.cs
index 97146f3..a4f7d2d 100644
--- a/scripts/inventory/UniversalItemContainer.cs
+++ b/scripts/inventory/UniversalItemContainer.cs
@@ -257,6 +257,10 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
 
     public bool ClearItem(int index)
     {
+        if (!_itemDictionary.TryGetValue(index, out var item))
+        {
+            return false;
+        }
         var result = _itemDictionary.Remove(index);
         if (result)
         {
@@ -268,6 +272,17 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
                 OldItem = null,
                 Type = Config.ItemDataChangeEventType.Clear
             });
+            if (SupportSelect && index == _selectIndex)
+            {
+                item.HideSelf();
+                SelectedItemChangeEvent?.Invoke(new SelectedItemChangeEvent()
+                {
+                    NewIndex = index,
+                    OldIndex = index,
+                    NewItem = null,
+                    OldItem = null
+                });
+            }
         }
         return result;
     }
diff --git a/scripts/loader/uiLoader/SpellEditorUi.cs b/scripts/loader/uiLoader/SpellEditorUi.cs
index 027a6ec..1091b2d 100644
--- a/scripts/loader/uiLoader/SpellEditorUi.cs
+++ b/scripts/loader/uiLoader/SpellEditorUi.cs
@@ -21,11 +21,17 @@ public partial class SpellEditorUi : UiLoaderTemplate
 
     private void OnItemDataChangeEvent(ItemDataChangeEvent itemDataChangeEvent)
     {
-        if (_itemSlot == null)
+        if (_itemSlot == null || _itemContainer == null)
         {
             return;
         }
-        _itemSlot.Update(itemDataChangeEvent.NewItem);
+        var item = itemDataChangeEvent.NewItem;
+        if (item == null)
+        {
+            item = _itemContainer.GetPlaceHolderItem(itemDataChangeEvent.NewIndex);
+        }
+        item.IsSelect = false;
+        _itemSlot.Update(item);
     }
 
     public override void _ExitTree()