diff --git a/src/UpdateThread.java b/src/UpdateThread.java
deleted file mode 100644
index 4d2dacd..0000000
--- a/src/UpdateThread.java
+++ /dev/null
@@ -1,22 +0,0 @@
-package cn.edu.caztc.sokobangame;
-import javax.swing.JPanel;
-
-public class UpdateThread extends Thread{  
-    JPanel panel;  
-    public UpdateThread(JPanel panel) {  
-        this.panel = panel;  
-    }  
-      
-    @Override  
-    public void run() {  
-        while(true){  
-            panel.repaint();  
-            try {  
-                Thread.sleep(10);  
-            } catch (InterruptedException e) {  
-                e.printStackTrace();  
-            }  
-        }  
-    }  
-      
-}  
\ No newline at end of file