diff --git a/prefab/bullet/OrdinaryBullets.tscn b/prefab/bullet/OrdinaryBullets.tscn
index e62a12b..2b67735 100644
--- a/prefab/bullet/OrdinaryBullets.tscn
+++ b/prefab/bullet/OrdinaryBullets.tscn
@@ -1,27 +1,16 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://src/bullet/OrdinaryBullets.cs" type="Script" id=1]
 [ext_resource path="res://resource/sprite/bullet/bullet.png" type="Texture" id=2]
 [ext_resource path="res://prefab/effect/Hit.tscn" type="PackedScene" id=3]
 
-[sub_resource type="RectangleShape2D" id=1]
-extents = Vector2( 0.5, 0.5 )
-
-[node name="OrdinaryBullets" type="KinematicBody2D"]
-collision_layer = 2
+[node name="OrdinaryBullets" type="RayCast2D"]
+enabled = true
+cast_to = Vector2( 8, 0 )
 script = ExtResource( 1 )
-__meta__ = {
-"_edit_horizontal_guides_": [  ],
-"_edit_vertical_guides_": [  ]
-}
 Hit = ExtResource( 3 )
 
 [node name="Bullet" type="Sprite" parent="."]
-position = Vector2( 1, 0 )
-scale = Vector2( 0.063, 1 )
+position = Vector2( 7, 0 )
 texture = ExtResource( 2 )
 offset = Vector2( -7.5, 0 )
-
-[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
-position = Vector2( 0.5, 0 )
-shape = SubResource( 1 )
diff --git a/resource/sprite/bullet/bullet.png b/resource/sprite/bullet/bullet.png
index fbf24ef..e9c30ef 100644
--- a/resource/sprite/bullet/bullet.png
+++ b/resource/sprite/bullet/bullet.png
Binary files differ
diff --git a/src/bullet/OrdinaryBullets.cs b/src/bullet/OrdinaryBullets.cs
index 7da7f58..34b0d71 100644
--- a/src/bullet/OrdinaryBullets.cs
+++ b/src/bullet/OrdinaryBullets.cs
@@ -3,7 +3,7 @@
 /// <summary>
 /// 普通的子弹
 /// </summary>
-public class OrdinaryBullets : KinematicBody2D, IBullet
+public class OrdinaryBullets : RayCast2D, IBullet
 {
     public CampEnum TargetCamp { get; private set; }
 
@@ -24,8 +24,6 @@
     private float FlySpeed = 1500;
     //当前子弹已经飞行的距离
     private float CurrFlyDistance = 0;
-    //碰撞数据
-    private KinematicCollision2D CollisionData = null;
 
     //子弹的精灵
     private Sprite BulletSprite;
@@ -42,39 +40,37 @@
         BulletSprite = GetNode<Sprite>("Bullet");
         // BulletSprite.Visible = false;
 
-        Scale = new Vector2(FlySpeed / 60 * 1.5f, 1);
-
-        GD.Print("---------------1" + GlobalPosition);
+        Scale = new Vector2(1.8f, 1);
     }
 
     public override void _PhysicsProcess(float delta)
     {
-        GD.Print("---------------2" + GlobalPosition);
 
-        if (CollisionData != null) //碰到物体
+        if (IsColliding())
         {
-            // 销毁
-            QueueFree();
+            var pos = GetCollisionPoint();
+            GlobalPosition = pos;
             Node2D hit = Hit.Instance<Node2D>();
             hit.RotationDegrees = MathUtils.RandRangeInt(0, 360);
-            hit.GlobalPosition = CollisionData.Position;
+            hit.GlobalPosition = pos;
             GetTree().CurrentScene.AddChild(hit);
-            return;
-        }
-
-        // 移动
-        CollisionData = MoveAndCollide(Vector2.Right.Rotated(GlobalRotation) * FlySpeed * delta);
-
-        if (CurrFlyDistance == 0)
-        {
-            BulletSprite.Visible = true;
-        }
-
-        CurrFlyDistance += FlySpeed * delta;
-        if (CurrFlyDistance >= MaxDistance)
-        {
             QueueFree();
         }
+        else
+        {
+            Position += new Vector2(FlySpeed * delta, 0).Rotated(Rotation);
+
+            if (CurrFlyDistance == 0)
+            {
+                BulletSprite.Visible = true;
+            }
+
+            CurrFlyDistance += FlySpeed * delta;
+            if (CurrFlyDistance >= MaxDistance)
+            {
+                QueueFree();
+            }
+        }
     }
 
 }
\ No newline at end of file