diff --git a/scripts/inventory/HotBar.cs b/scripts/inventory/HotBar.cs
index 0cc99dd..84e7a27 100644
--- a/scripts/inventory/HotBar.cs
+++ b/scripts/inventory/HotBar.cs
@@ -20,7 +20,7 @@ public partial class HotBar : HBoxContainer
         NodeUtils.DeleteAllChild(this);
         for (var i = 0; i < Config.HotBarSize; i++)
         {
-            _itemContainer.AddItemSlot(this, i);
+            _itemContainer.AddItemSlot(this);
         }
     }
 
diff --git a/scripts/inventory/IItemContainer.cs b/scripts/inventory/IItemContainer.cs
index 72ee577..1a5a36b 100644
--- a/scripts/inventory/IItemContainer.cs
+++ b/scripts/inventory/IItemContainer.cs
@@ -219,8 +219,7 @@ public interface IItemContainer : IEnumerable<ItemSlotNode>
     /// <para>添加物品槽</para>
     /// </summary>
     /// <param name="rootNode"></param>
-    /// <param name="index"></param>
-    void AddItemSlot(Node rootNode, int index);
+    void AddItemSlot(Node rootNode);
 
     /// <summary>
     /// <para>SelectTheNextItemSlot</para>
diff --git a/scripts/inventory/UniversalItemContainer.cs b/scripts/inventory/UniversalItemContainer.cs
index 938f094..5d47e56 100644
--- a/scripts/inventory/UniversalItemContainer.cs
+++ b/scripts/inventory/UniversalItemContainer.cs
@@ -22,7 +22,7 @@ public class UniversalItemContainer : IItemContainer
 {
     private readonly PackedScene? _itemSlotPackedScene = GD.Load<PackedScene>("res://prefab/ui/ItemSlot.tscn");
 
-    private readonly List<ItemSlotNode>? _itemSlotNodes = new();
+    private readonly List<ItemSlotNode>? _itemSlotNodes = [];
 
     /// <summary>
     /// <para>Character</para>
@@ -221,7 +221,7 @@ public class UniversalItemContainer : IItemContainer
     /// <para>Add items tank</para>
     /// <para>添加物品槽</para>
     /// </summary>
-    public void AddItemSlot(Node rootNode, int index)
+    public void AddItemSlot(Node rootNode)
     {
         if (_itemSlotNodes == null || _itemSlotPackedScene == null)
         {
@@ -234,7 +234,7 @@ public class UniversalItemContainer : IItemContainer
             return;
         }
 
-        itemSlotNode.IsSelect = index == _selectIndex;
+        itemSlotNode.IsSelect = (_itemSlotNodes.Count ) == _selectIndex;
         _itemSlotNodes.Add(itemSlotNode);
     }
 
diff --git a/scripts/item/Packsack.cs b/scripts/item/Packsack.cs
index 6a9aa16..6ac8e91 100644
--- a/scripts/item/Packsack.cs
+++ b/scripts/item/Packsack.cs
@@ -49,5 +49,8 @@ public partial class Packsack : RigidBody2D, IItem
     {
         base._Ready();
         ItemContainer = new UniversalItemContainer();
+
+        //Test: Add one ItemSlot for pack
+        ItemContainer.AddItemSlot(this);
     }
 }
\ No newline at end of file