diff --git a/resources/config.properties b/resources/config.properties
new file mode 100644
index 0000000..fb36f7e
--- /dev/null
+++ b/resources/config.properties
@@ -0,0 +1,6 @@
+#tanks count at initialization
+initTankCount=10
+tankSpeed=5
+bulletSpeed=10
+gameWidth=1080
+gameHeight=720
\ No newline at end of file
diff --git a/src/com/msb/PropertyMgr.java b/src/com/msb/PropertyMgr.java
new file mode 100644
index 0000000..0570e0f
--- /dev/null
+++ b/src/com/msb/PropertyMgr.java
@@ -0,0 +1,33 @@
+package com.msb;
+
+import java.io.IOException;
+import java.util.Objects;
+import java.util.Properties;
+
+/**
+ * @Author bingor
+ * @Date 2022-10-05 22:35
+ * @Description: com.msb
+ * @Version: 1.0
+ */
+public class PropertyMgr {
+
+    private static Properties props = new Properties();
+
+    static {
+        try {
+            props.load(PropertyMgr.class.getClassLoader().getResourceAsStream("config.properties"));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static Object get(String key) {
+        return props.get(key);
+    }
+
+    public static void main(String[] args) {
+        System.out.println(get("initTankCount"));
+    }
+
+}
diff --git a/src/com/msb/Tank.java b/src/com/msb/Tank.java
index 9904705..4b5dfd7 100644
--- a/src/com/msb/Tank.java
+++ b/src/com/msb/Tank.java
@@ -13,7 +13,7 @@ public class Tank {
 
     private int x,y;
     private DirEnum dir;
-    private static final int SPEED = 2;
+    private static final int SPEED = 4;
     private boolean move = true;
     //为了解决能够在坦克中发射子弹，将创建的子弹通过坦克发射出来，那么需要在坦克类中持有游戏窗口的引用
     private TankFrame tankFrame;
@@ -75,15 +75,15 @@ 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
         if(this.group == GroupEnum.BAD && random.nextInt(100) > 95) this.randomDir();
 
         this.boundsCheck();
+
+        rectangle.x = this.x;
+        rectangle.y = this.y;
     }
 
     public void randomDir() {
diff --git a/src/com/msb/TankDemo.java b/src/com/msb/TankDemo.java
index 4a6b454..e657abc 100644
--- a/src/com/msb/TankDemo.java
+++ b/src/com/msb/TankDemo.java
@@ -14,8 +14,10 @@ public class TankDemo {
          TankFrame tankFrame = new TankFrame();
         Random random = new Random();
 
+        int initTankCount = Integer.parseInt((String) PropertyMgr.get("initTankCount"));
+
          //创建5个敌方坦克
-        for (int i=0; i<5; i++) {
+        for (int i=0; i<initTankCount; i++) {
 //            tankFrame.tanks.add(new Tank(100 + i*80, 100, DirEnum.valueOf(random.nextInt(30)%4), GroupEnum.BAD, tankFrame));
             tankFrame.tanks.add(new Tank(100 + i*80, 100, DirEnum.DOWN, GroupEnum.BAD, tankFrame));
         }
diff --git a/src/com/msb/TankFrame.java b/src/com/msb/TankFrame.java
index 630cf7e..8749221 100644
--- a/src/com/msb/TankFrame.java
+++ b/src/com/msb/TankFrame.java
@@ -23,8 +23,8 @@ public class TankFrame extends Frame {
     List<Bullet> bullets = new ArrayList<>();
     List<Tank> tanks = new ArrayList<>();   //敌方坦克
     List<Explode> explodes = new ArrayList<>();     //爆炸效果
-    public static final int GAME_WIDTH = 800;
-    public static final int GAME_HEIGHT = 600;
+    public static final int GAME_WIDTH = 1000;
+    public static final int GAME_HEIGHT = 800;
 
     public TankFrame() {