diff --git a/src/com/msb/Bullet.java b/src/com/msb/Bullet.java
index 314d003..d23e419 100644
--- a/src/com/msb/Bullet.java
+++ b/src/com/msb/Bullet.java
@@ -18,7 +18,7 @@ public class Bullet {
     private boolean live = true;
     private GroupEnum group = GroupEnum.BAD;
     private TankFrame tankFrame;
-//    private Rectangle rectangle;
+    private Rectangle rectangle = new Rectangle();
 
     public Bullet(int x, int y, DirEnum dir, GroupEnum group, TankFrame tankFrame) {
         this.x = x;
@@ -26,7 +26,11 @@ public class Bullet {
         this.dir = dir;
         this.group = group;
         this.tankFrame = tankFrame;
-//        this.rectangle = new Rectangle(x, y, WIDTH, HEIGHT);
+
+        rectangle.x = this.x;
+        rectangle.x = this.y;
+        rectangle.width = WIDTH;
+        rectangle.height = HEIGHT;
     }
 
     public void paint(Graphics g) {
@@ -61,6 +65,9 @@ public class Bullet {
             default: break;
         }
 
+        rectangle.x = this.x;
+        rectangle.y = this.y;
+
         if(x<0 || y<0 || x>TankFrame.GAME_WIDTH || y>TankFrame.GAME_HEIGHT) this.live = false;
 
     }
@@ -79,13 +86,18 @@ public class Bullet {
         if(this.group == tank.getGroup()) return;
 
         //TODO 每次碰撞的时候都小new 一个 Rectangle,应该用一个Rectangle来记录子弹的位置，产生内存占用，垃圾回收器会时不时运行一下
-        Rectangle bullteRec = new Rectangle(this.x, this.y, WIDTH, HEIGHT);
+        /*Rectangle bullteRec = new Rectangle(this.x, this.y, WIDTH, HEIGHT);
         Rectangle tankRec = new Rectangle(tank.getX(), tank.getY(), Tank.WIDTH, Tank.HEIGHT);
         if(bullteRec.intersects(tankRec)) {
-//        if(this.rectangle.intersects(tank.getRectangle())) {
+            this.die();
+            tank.die();
+        }*/
+
+        if(rectangle.intersects(tank.getRectangle())) {
             this.die();
             tank.die();
         }
+
     }
 
     private void die() {
diff --git a/src/com/msb/Tank.java b/src/com/msb/Tank.java
index cd8bdb8..9904705 100644
--- a/src/com/msb/Tank.java
+++ b/src/com/msb/Tank.java
@@ -22,7 +22,7 @@ public class Tank {
     private boolean live = true;
     private Random random = new Random();
     private GroupEnum group = GroupEnum.BAD;
-//    private Rectangle rectangle;
+    private Rectangle rectangle = new Rectangle();
 
     public Tank(int x, int y, DirEnum dir, GroupEnum group, TankFrame tankFrame) {
         this.x = x;
@@ -30,7 +30,11 @@ public class Tank {
         this.dir = dir;
         this.group = group;
         this.tankFrame = tankFrame;
-//        this.rectangle = new Rectangle(x, y, WIDTH, HEIGHT);
+
+        rectangle.x = this.x;
+        rectangle.x = this.y;
+        rectangle.width = WIDTH;
+        rectangle.height = HEIGHT;
     }
 
     public void paint(Graphics g) {
@@ -71,6 +75,9 @@ public class Tank {
             default: break;
         }
 
+        rectangle.x = this.x;
+        rectangle.y = this.y;
+
         //敌方坦克随机发射炮弹
         if(this.group == GroupEnum.BAD && random.nextInt(100) > 95) this.fire();
         //敌方坦克随机改变方向进行
@@ -120,8 +127,8 @@ public class Tank {
         return group;
     }
 
-    /*public Rectangle getRectangle() {
+    public Rectangle getRectangle() {
         return rectangle;
-    }*/
+    }
 
 }