diff --git a/src/main/java/cn/citycraft/Yum/Yum.java b/src/main/java/cn/citycraft/Yum/Yum.java
index bff6d73..96a97a6 100644
--- a/src/main/java/cn/citycraft/Yum/Yum.java
+++ b/src/main/java/cn/citycraft/Yum/Yum.java
@@ -3,11 +3,14 @@
  */
 package cn.citycraft.Yum;
 
+import org.bukkit.Bukkit;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import cn.citycraft.Yum.utils.DownloadUtils;
+import cn.citycraft.Yum.utils.PluginUtil;
 
 /**
  * MC插件仓库
@@ -16,29 +19,45 @@ import cn.citycraft.Yum.utils.DownloadUtils;
  *         2015年8月21日下午5:14:39
  */
 public class Yum extends JavaPlugin {
-	String url = "http://ci.citycraft.cn:8800/jenkins/job/%1$s/lastSuccessfulBuild/artifact/target/%1$s.jar";
-
 	@Override
 	public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
 		switch (args.length) {
 		case 0:
 			break;
-		case 2:
+		case 1:
 			switch (args[0]) {
-			case "install":
-				if (DownloadUtils.download(String.format(url, args[1]), getDataFolder().getParent(), args[1])) {
-					sender.sendMessage("OK");
-				} else {
-					sender.sendMessage("Error");
+			case "list":
+				sender.sendMessage("§3服务器已安装插件: ");
+				for (Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+					sender.sendMessage("§6 - " + PluginUtil.getFormattedName(plugin, true));
 				}
 				break;
-			case "remove":
-				break;
 			}
 			break;
-
+		case 2:
+			Plugin plugin = this.getServer().getPluginManager().getPlugin(args[1]);
+			switch (args[0]) {
+			case "install":
+				if (DownloadUtils.download(sender, args[1]))
+					sender.sendMessage(PluginUtil.load(args[1]));
+				break;
+			case "remove":
+				if (plugin != null) {
+					sender.sendMessage(PluginUtil.unload(plugin));
+				} else {
+					sender.sendMessage("插件不存在或已卸载!");
+				}
+				break;
+			case "update":
+				if (plugin != null) {
+					if (DownloadUtils.download(sender, args[1]))
+						sender.sendMessage(PluginUtil.load(args[1]));
+				} else {
+					sender.sendMessage("插件不存在或已卸载!");
+				}
+				break;
+			}
 		}
 		return true;
 	}
-
 }
diff --git a/src/main/java/cn/citycraft/Yum/utils/DownloadUtils.java b/src/main/java/cn/citycraft/Yum/utils/DownloadUtils.java
index d8d2a42..02275c4 100644
--- a/src/main/java/cn/citycraft/Yum/utils/DownloadUtils.java
+++ b/src/main/java/cn/citycraft/Yum/utils/DownloadUtils.java
@@ -8,9 +8,9 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.net.URL;
-import java.util.logging.Level;
 
 import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
 
 /**
  * @author 蒋天蓓
@@ -18,49 +18,50 @@ import org.bukkit.Bukkit;
  *         TODO
  */
 public class DownloadUtils {
-	public static boolean download(String url, String dir, String filename) {
-
+	public static boolean download(CommandSender sender, String pluginname) {
+		String url = "http://ci.citycraft.cn:8800/jenkins/job/%1$s/lastSuccessfulBuild/artifact/target/%1$s.jar";
 		BufferedInputStream in = null;
 		FileOutputStream fout = null;
+		if (sender == null)
+			sender = Bukkit.getConsoleSender();
 		try {
-			URL fileUrl = new URL(url);
-			System.out.println("下载地址: " + url);
+			sender.sendMessage("开始下载: " + pluginname);
+			URL fileUrl = new URL(String.format(url, pluginname));
+			sender.sendMessage("下载地址: http://********/" + fileUrl.getFile());
 			int fileLength = fileUrl.openConnection().getContentLength();
-			System.out.println("文件长度: " + fileLength);
+			sender.sendMessage("文件长度: " + fileLength);
 			in = new BufferedInputStream(fileUrl.openStream());
-			File file = new File(dir, filename + ".jar");
+			File file = new File("/plugins/", fileUrl.getFile());
 			if (!file.exists()) {
 				file.createNewFile();
+				sender.sendMessage("创建新文件: " + fileUrl.getFile());
 			}
 			fout = new FileOutputStream(file);
-
 			byte[] data = new byte[1024];
-
-			// long downloaded = 0L;
+			long downloaded = 0L;
 			int count;
+			long time = System.currentTimeMillis();
 			while ((count = in.read(data)) != -1) {
-				// downloaded += count;
+				downloaded += count;
 				fout.write(data, 0, count);
-				// int percent = (int) (downloaded / fileLength);
+				double percent = downloaded / fileLength * 10000;
+				if (System.currentTimeMillis() - time > 1000) {
+					sender.sendMessage(String.format("已下载: ====================> %.2f%%", percent));
+					time = System.currentTimeMillis();
+				}
 			}
 			return true;
 		} catch (Exception ex) {
-			Bukkit.getLogger().log(Level.WARNING, "The auto-updater tried to download a new update, but was unsuccessful.", ex);
+			sender.sendMessage("插件下载失败!");
 			return false;
 		} finally {
 			try {
 				if (in != null) {
 					in.close();
-				}
-			} catch (IOException ex) {
-				Bukkit.getLogger().log(Level.SEVERE, null, ex);
-			}
-			try {
-				if (fout != null) {
 					fout.close();
 				}
 			} catch (IOException ex) {
-				Bukkit.getLogger().log(Level.SEVERE, null, ex);
+				sender.sendMessage("关闭数据流时发生错误!");
 			}
 		}
 	}
diff --git a/src/main/java/cn/citycraft/Yum/utils/PluginUtil.java b/src/main/java/cn/citycraft/Yum/utils/PluginUtil.java
new file mode 100644
index 0000000..ca92fa7
--- /dev/null
+++ b/src/main/java/cn/citycraft/Yum/utils/PluginUtil.java
@@ -0,0 +1,282 @@
+/**
+ * 
+ */
+package cn.citycraft.Yum.utils;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.SortedSet;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.PluginCommand;
+import org.bukkit.command.SimpleCommandMap;
+import org.bukkit.event.Event;
+import org.bukkit.plugin.InvalidDescriptionException;
+import org.bukkit.plugin.InvalidPluginException;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.RegisteredListener;
+
+import com.google.common.base.Joiner;
+
+/**
+ * 插件管理类
+ * 
+ * @author 蒋天蓓
+ *         2015年8月21日下午7:03:26
+ */
+public class PluginUtil {
+
+	public static void enable(Plugin plugin) {
+		if ((!plugin.isEnabled()) && (plugin != null)) {
+			Bukkit.getPluginManager().enablePlugin(plugin);
+		}
+	}
+
+	public static void enableAll() {
+		for (Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
+				enable(plugin);
+			}
+		}
+	}
+
+	public static void disable(Plugin plugin) {
+		if ((plugin.isEnabled()) && (plugin != null)) {
+			Bukkit.getPluginManager().disablePlugin(plugin);
+		}
+	}
+
+	public static void disableAll() {
+		for (Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
+				disable(plugin);
+			}
+		}
+	}
+
+	public static String getFormattedName(Plugin plugin) {
+		return getFormattedName(plugin, false);
+	}
+
+	public static String getFormattedName(Plugin plugin, boolean includeVersions) {
+		ChatColor color = plugin.isEnabled() ? ChatColor.GREEN : ChatColor.RED;
+		String pluginName = color + plugin.getName();
+		if (includeVersions)
+			pluginName = pluginName + " (" + plugin.getDescription().getVersion() + ")";
+		return pluginName;
+	}
+
+	public static Plugin getPluginByName(String[] args, int start) {
+		return getPluginByName(StringUtil.consolidateStrings(args, start));
+	}
+
+	public static Plugin getPluginByName(String name) {
+		for (Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (name.equalsIgnoreCase(plugin.getName()))
+				return plugin;
+		}
+		return null;
+	}
+
+	public static List<String> getPluginNames(boolean fullName) {
+		List<String> plugins = new ArrayList<String>();
+		for (Plugin plugin : Bukkit.getPluginManager().getPlugins())
+			plugins.add(fullName ? plugin.getDescription().getFullName() : plugin.getName());
+		return plugins;
+	}
+
+	public static String getPluginVersion(String name) {
+		Plugin plugin = getPluginByName(name);
+		if ((plugin != null) && (plugin.getDescription() != null))
+			return plugin.getDescription().getVersion();
+		return null;
+	}
+
+	public static String getUsages(Plugin plugin) {
+		List<String> parsedCommands = new ArrayList<String>();
+
+		Map<String, Map<String, Object>> commands = plugin.getDescription().getCommands();
+
+		if (commands != null) {
+			Iterator<Entry<String, Map<String, Object>>> commandsIt = commands.entrySet().iterator();
+			while (commandsIt.hasNext()) {
+				Entry<String, Map<String, Object>> thisEntry = commandsIt.next();
+				if (thisEntry != null) {
+					parsedCommands.add(thisEntry.getKey());
+				}
+			}
+		}
+		if (parsedCommands.isEmpty()) {
+			return "没有注册命令!";
+		}
+		return Joiner.on(", ").join(parsedCommands);
+	}
+
+	public static boolean isIgnored(Plugin plugin) {
+		return isIgnored(plugin.getName());
+	}
+
+	public static boolean isIgnored(String plugin) {
+		for (String name : new ArrayList<String>()) {
+			if (name.equalsIgnoreCase(plugin))
+				return true;
+		}
+		return false;
+	}
+
+	private static String load(Plugin plugin) {
+		return load(plugin.getName());
+	}
+
+	public static String load(String name) {
+		Plugin target = null;
+
+		File pluginDir = new File("plugins");
+
+		if (!pluginDir.isDirectory()) {
+			// TODO 提示
+		}
+		File pluginFile = new File(pluginDir, name + ".jar");
+
+		if (!pluginFile.isFile()) {
+			return "插件不存在!";
+		}
+		try {
+			target = Bukkit.getPluginManager().loadPlugin(pluginFile);
+		} catch (InvalidDescriptionException e) {
+			e.printStackTrace();
+			return "错误的插件信息!";
+		} catch (InvalidPluginException e) {
+			e.printStackTrace();
+			return "错误的插件!";
+		}
+
+		target.onLoad();
+		Bukkit.getPluginManager().enablePlugin(target);
+
+		return "插件已载入!";
+	}
+
+	public static void reload(Plugin plugin) {
+		if (plugin != null) {
+			unload(plugin);
+			load(plugin);
+		}
+	}
+
+	public static void reloadAll() {
+		for (Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
+			if (!isIgnored(plugin)) {
+				reload(plugin);
+			}
+		}
+	}
+
+	@SuppressWarnings("unchecked")
+	public static String unload(Plugin plugin) {
+		String name = plugin.getName();
+
+		PluginManager pluginManager = Bukkit.getPluginManager();
+
+		SimpleCommandMap commandMap = null;
+
+		List<Plugin> plugins = null;
+
+		Map<String, Plugin> names = null;
+		Map<String, Command> commands = null;
+		Map<Event, SortedSet<RegisteredListener>> listeners = null;
+
+		boolean reloadlisteners = true;
+
+		if (pluginManager != null) {
+			try {
+				Field pluginsField = Bukkit.getPluginManager().getClass().getDeclaredField("plugins");
+				pluginsField.setAccessible(true);
+				plugins = (List<Plugin>) pluginsField.get(pluginManager);
+
+				Field lookupNamesField = Bukkit.getPluginManager().getClass().getDeclaredField("lookupNames");
+				lookupNamesField.setAccessible(true);
+				names = (Map<String, Plugin>) lookupNamesField.get(pluginManager);
+				try {
+					Field listenersField = Bukkit.getPluginManager().getClass().getDeclaredField("listeners");
+					listenersField.setAccessible(true);
+					listeners = (Map<Event, SortedSet<RegisteredListener>>) listenersField.get(pluginManager);
+				} catch (Exception e) {
+					reloadlisteners = false;
+				}
+
+				Field commandMapField = Bukkit.getPluginManager().getClass().getDeclaredField("commandMap");
+				commandMapField.setAccessible(true);
+				commandMap = (SimpleCommandMap) commandMapField.get(pluginManager);
+
+				Field knownCommandsField = SimpleCommandMap.class.getDeclaredField("knownCommands");
+				knownCommandsField.setAccessible(true);
+				commands = (Map<String, Command>) knownCommandsField.get(commandMap);
+			} catch (NoSuchFieldException e) {
+				e.printStackTrace();
+				return "插件卸载失败!";
+			} catch (IllegalAccessException e) {
+				e.printStackTrace();
+				return "插件已失败!";
+			}
+		}
+
+		pluginManager.disablePlugin(plugin);
+
+		if ((plugins != null) && (plugins.contains(plugin))) {
+			plugins.remove(plugin);
+		}
+		if ((names != null) && (names.containsKey(name))) {
+			names.remove(name);
+		}
+		Iterator<RegisteredListener> it;
+		if ((listeners != null) && (reloadlisteners)) {
+			for (SortedSet<RegisteredListener> set : listeners.values()) {
+				for (it = set.iterator(); it.hasNext();) {
+					RegisteredListener value = it.next();
+					if (value.getPlugin() == plugin)
+						it.remove();
+				}
+			}
+		}
+
+		Iterator<Map.Entry<String, Command>> cmdit;
+		if (commandMap != null) {
+			for (cmdit = commands.entrySet().iterator(); cmdit.hasNext();) {
+				Map.Entry<String, Command> entry = cmdit.next();
+				if ((entry.getValue() instanceof PluginCommand)) {
+					PluginCommand c = (PluginCommand) entry.getValue();
+					if (c.getPlugin() == plugin) {
+						c.unregister(commandMap);
+						cmdit.remove();
+					}
+				}
+			}
+		}
+
+		ClassLoader cl = plugin.getClass().getClassLoader();
+
+		if ((cl instanceof URLClassLoader)) {
+			try {
+				((URLClassLoader) cl).close();
+			} catch (IOException ex) {
+				Logger.getLogger(PluginUtil.class.getName()).log(Level.SEVERE, null, ex);
+			}
+		}
+
+		System.gc();
+		return "插件已卸载!";
+	}
+}
diff --git a/src/main/java/cn/citycraft/Yum/utils/StringUtil.java b/src/main/java/cn/citycraft/Yum/utils/StringUtil.java
new file mode 100644
index 0000000..800ef6e
--- /dev/null
+++ b/src/main/java/cn/citycraft/Yum/utils/StringUtil.java
@@ -0,0 +1,31 @@
+/**
+ * 
+ */
+package cn.citycraft.Yum.utils;
+
+/**
+ * 字符串工具
+ * 
+ * @author 蒋天蓓
+ *         2015年8月21日下午7:05:51
+ */
+public class StringUtil {
+
+	/**
+	 * 转移数组
+	 * 
+	 * @param args
+	 *            - 原数组
+	 * @param start
+	 *            - 数组开始位置
+	 * @return 转移后的数组
+	 */
+	public static String consolidateStrings(String[] args, int start) {
+		String ret = args[start];
+		if (args.length > start + 1) {
+			for (int i = start + 1; i < args.length; i++)
+				ret = ret + " " + args[i];
+		}
+		return ret;
+	}
+}
\ No newline at end of file