diff --git a/prefab/role/Player.tscn b/prefab/role/Player.tscn
index 9089f4d..abab257 100644
--- a/prefab/role/Player.tscn
+++ b/prefab/role/Player.tscn
@@ -8,6 +8,3 @@
 collision_layer = 8
 script = ExtResource( 2 )
 GunPrefab = ExtResource( 4 )
-
-[node name="AnimatedSprite" parent="." index="0"]
-frame = 1
diff --git a/prefab/role/Role.tscn b/prefab/role/Role.tscn
index 1c7e387..a7d86e4 100644
--- a/prefab/role/Role.tscn
+++ b/prefab/role/Role.tscn
@@ -101,3 +101,8 @@
 
 [node name="MountPoint" type="Position2D" parent="."]
 position = Vector2( 2, -4 )
+z_index = 1
+
+[node name="BackMountPoint" type="Position2D" parent="."]
+position = Vector2( 0, -5 )
+z_index = -1
diff --git a/prefab/weapon/Gun.tscn b/prefab/weapon/Gun.tscn
index 0a3f551..9e1161b 100644
--- a/prefab/weapon/Gun.tscn
+++ b/prefab/weapon/Gun.tscn
@@ -7,7 +7,6 @@
 extents = Vector2( 9.5, 3.5 )
 
 [node name="Gun" type="Node2D"]
-z_index = 5
 script = ExtResource( 1 )
 
 [node name="GunSprite" type="Sprite" parent="."]
diff --git a/src/package/Holster.cs b/src/package/Holster.cs
index 0251c81..5dcbc66 100644
--- a/src/package/Holster.cs
+++ b/src/package/Holster.cs
@@ -68,8 +68,7 @@
             if (item.Enable && gun.Attribute.WeightType == item.Type && item.Gun == null)
             {
                 item.Gun = gun;
-                ActiveGun = gun;
-                ActiveIndex = i;
+                gun._PickUpGun(Master);
                 return i;
             }
         }
@@ -97,23 +96,7 @@
             {
                 index = 0;
             }
-            var slot = SlotList[index];
-            if (slot != null && slot.Gun != null)
-            {
-                //更改父节点
-                var parent = slot.Gun.GetParentOrNull<Node>();
-                if (parent == null)
-                {
-                    Master.MountPoint.AddChild(slot.Gun);
-                }
-                else if (parent != Master.MountPoint)
-                {
-                    parent.RemoveChild(slot.Gun);
-                    Master.MountPoint.AddChild(slot.Gun);
-                }
-
-                ActiveGun = slot.Gun;
-                ActiveIndex = index;
+            if (ExchangeByIndex(index)) {
                 return index;
             }
             index++;
@@ -129,6 +112,16 @@
         if (index > SlotList.Length) return false;
         var slot = SlotList[index];
         if (slot == null || slot.Gun == null) return false;
+
+        //将上一把武器放到背后
+        if (ActiveGun != null)
+        {
+            ActiveGun.GetParent().RemoveChild(ActiveGun);
+            Master.BackMountPoint.AddChild(ActiveGun);
+            ActiveGun.RotationDegrees = 60;
+            ActiveGun.Scale = new Vector2(-1, 1);
+        }
+
         //更改父节点
         var parent = slot.Gun.GetParentOrNull<Node>();
         if (parent == null)
@@ -141,6 +134,8 @@
             Master.MountPoint.AddChild(slot.Gun);
         }
 
+        slot.Gun.Scale = Vector2.One;
+        slot.Gun.RotationDegrees = 0;
         ActiveGun = slot.Gun;
         ActiveIndex = index;
         return true;
diff --git a/src/role/Player.cs b/src/role/Player.cs
index 4acdb47..d11bb27 100644
--- a/src/role/Player.cs
+++ b/src/role/Player.cs
@@ -28,8 +28,8 @@
     {
         base._Ready();
 
-        PickUpGun(GunManager.GetGun1());
-        PickUpGun(GunManager.GetGun2());
+        PickUpGun(GunManager.GetGun1()); //0
+        PickUpGun(GunManager.GetGun2()); //1
     }
 
     public override void _Process(float delta)
diff --git a/src/role/Role.cs b/src/role/Role.cs
index 6a5e4d0..b845f07 100644
--- a/src/role/Role.cs
+++ b/src/role/Role.cs
@@ -48,6 +48,10 @@
     /// 武器挂载点
     /// </summary>
     public Position2D MountPoint { get; private set; }
+    /// <summary>
+    /// 背后武器的挂载点
+    /// </summary>
+    public Position2D BackMountPoint { get; private set; }
 
     /// <summary>
     /// 脸的朝向
@@ -62,6 +66,7 @@
         StartScele = Scale;
         AnimatedSprite = GetNode<AnimatedSprite>("AnimatedSprite");
         MountPoint = GetNode<Position2D>("MountPoint");
+        BackMountPoint = GetNode<Position2D>("BackMountPoint");
         // 更改纹理
         ChangeFrameTexture(AnimatorNames.Idle, AnimatedSprite, Texture);
         ChangeFrameTexture(AnimatorNames.Run, AnimatedSprite, Texture);
@@ -83,21 +88,12 @@
 
     public void ExchangeNext()
     {
-        var index = Holster.ExchangeNext();
-        if (index != -1)
-        {
-            SetActiveGun(index);
-        }
+        Holster.ExchangeNext();
     }
 
     private void SetActiveGun(int index)
     {
-        if (Holster.ActiveGun != null)
-        {
-            Holster.ActiveGun.Visible = false;
-        }
         Holster.ExchangeByIndex(index);
-        Holster.ActiveGun.Visible = true;
     }
 
     private void SetFace(FaceDirection face)
diff --git a/src/weapon/gun/Gun.cs b/src/weapon/gun/Gun.cs
index 15e154e..ad5529a 100644
--- a/src/weapon/gun/Gun.cs
+++ b/src/weapon/gun/Gun.cs
@@ -41,7 +41,7 @@
     /// <summary>
     /// 该武器的拥有者
     /// </summary>
-    public Node2D Master { get; }
+    public Role Master { get; private set; }
 
     /// <summary>
     /// 枪管的开火点
@@ -85,6 +85,10 @@
 
     public override void _Process(float delta)
     {
+        if (Master == null || Master.Holster.ActiveGun != this)
+        {
+            return;
+        }
         if (triggerFlag)
         {
             if (upTimer > 0) //第一帧按下扳机
@@ -321,13 +325,25 @@
     /// </summary>
     protected abstract void OnThrowOut();
 
+    public void _PickUpGun(Role master)
+    {
+        Master = master;
+        OnPickUp(master);
+    }
+
+    public void _ThrowOutGun()
+    {
+        Master = null;
+        OnThrowOut();
+    }
+
     /// <summary>
     /// 实例化并返回子弹对象
     /// </summary>
     /// <param name="bulletPack">子弹的预制体</param>
     protected T CreateBullet<T>(PackedScene bulletPack, Vector2 globalPostion, float globalRotation, Node parent = null) where T : Node2D, IBullet
     {
-        return (T) CreateBullet(bulletPack, globalPostion, globalRotation, parent);
+        return (T)CreateBullet(bulletPack, globalPostion, globalRotation, parent);
     }