diff --git a/src/main/java/pw/yumc/YumCore/commands/CommandManager.java b/src/main/java/pw/yumc/YumCore/commands/CommandManager.java
index 8a85068..557ec5d 100644
--- a/src/main/java/pw/yumc/YumCore/commands/CommandManager.java
+++ b/src/main/java/pw/yumc/YumCore/commands/CommandManager.java
@@ -105,7 +105,8 @@ public class CommandManager implements TabExecutor {
     /**
      * 命令管理器
      *
-     * @param name 注册的命令
+     * @param name
+     *            注册的命令
      */
     public CommandManager(String name) {
         cmd = plugin.getCommand(name);
@@ -126,8 +127,10 @@ public class CommandManager implements TabExecutor {
     /**
      * 命令管理器
      *
-     * @param name     注册的命令
-     * @param executor 命令执行类
+     * @param name
+     *            注册的命令
+     * @param executor
+     *            命令执行类
      */
     public CommandManager(String name, CommandExecutor... executor) {
         this(name);
@@ -154,13 +157,12 @@ public class CommandManager implements TabExecutor {
         List<String> completions = new ArrayList<>();
         String token = args[args.length - 1];
         if (args.length == 1) {
-            StringUtil.copyPartialMatches(args[0], cmdNameCache, completions);
-        } else if (args.length >= 2) {
-            for (CommandTabInfo tab : tabs) {
-                StringUtil.copyPartialMatches(token, tab.execute(sender, command, token, args), completions);
-            }
-            StringUtil.copyPartialMatches(token, getPlayerTabComplete(sender, command, alias, args), completions);
+            StringUtil.copyPartialMatches(token, cmdNameCache, completions);
         }
+        for (CommandTabInfo tab : tabs) {
+            StringUtil.copyPartialMatches(token, tab.execute(sender, command, token, args), completions);
+        }
+        StringUtil.copyPartialMatches(token, getPlayerTabComplete(sender, command, alias, args), completions);
         Collections.sort(completions, String.CASE_INSENSITIVE_ORDER);
         return completions;
     }
@@ -168,7 +170,8 @@ public class CommandManager implements TabExecutor {
     /**
      * 通过注解读取命令并注册
      *
-     * @param clazzs 子命令处理类
+     * @param clazzs
+     *            子命令处理类
      */
     public void register(CommandExecutor... clazzs) {
         for (CommandExecutor clazz : clazzs) {
@@ -187,7 +190,8 @@ public class CommandManager implements TabExecutor {
     /**
      * 设置帮助解析器
      *
-     * @param helpParse 帮助解析器
+     * @param helpParse
+     *            帮助解析器
      */
     public void setHelpParse(CommandHelpParse helpParse) {
         help.setHelpParse(helpParse);
@@ -208,7 +212,8 @@ public class CommandManager implements TabExecutor {
     /**
      * 检查缓存并获得命令
      *
-     * @param subcmd 子命令
+     * @param subcmd
+     *            子命令
      * @return 命令信息
      */
     private CommandInfo getByCache(String subcmd) {
@@ -229,10 +234,14 @@ public class CommandManager implements TabExecutor {
     /**
      * 获取玩家命令补全
      *
-     * @param sender  命令发送者
-     * @param command 命令
-     * @param alias   别名
-     * @param args    数组
+     * @param sender
+     *            命令发送者
+     * @param command
+     *            命令
+     * @param alias
+     *            别名
+     * @param args
+     *            数组
      * @return 在线玩家数组
      */
     private List<String> getPlayerTabComplete(CommandSender sender, Command command, String alias, String[] args) {
@@ -251,8 +260,10 @@ public class CommandManager implements TabExecutor {
     /**
      * 转移数组
      *
-     * @param args  原数组
-     * @param start 数组开始位置
+     * @param args
+     *            原数组
+     * @param start
+     *            数组开始位置
      * @return 转移后的数组字符串
      */
     private String[] moveStrings(String[] args, int start) {
@@ -264,23 +275,29 @@ public class CommandManager implements TabExecutor {
     /**
      * 注册命令
      *
-     * @param method 方法
-     * @param clazz  调用对象
+     * @param method
+     *            方法
+     * @param clazz
+     *            调用对象
      * @return 是否成功
      */
     private boolean registerCommand(Method method, CommandExecutor clazz) {
         CommandInfo ci = CommandInfo.parse(method, clazz);
         if (ci != null) {
-            Class<?>[] params = method.getParameterTypes();
+            Class[] params = method.getParameterTypes();
             Log.d("命令 %s 参数类型: %s", ci.getName(), Arrays.toString(params));
-            if (params.length > 0 && params[0].isAssignableFrom(CommandSender.class)) {
-                if (method.getReturnType() == boolean.class) {
-                    defCmd = ci;
-                } else {
-                    cmds.add(ci);
-                    cmdCache.put(ci.getName(), ci);
+            if (params.length > 0) {
+                try {
+                    Class<? extends CommandSender> sender = params[0];
+                    if (method.getReturnType() == boolean.class) {
+                        defCmd = ci;
+                    } else {
+                        cmds.add(ci);
+                        cmdCache.put(ci.getName(), ci);
+                    }
+                    return true;
+                } catch (ClassCastException ignored) {
                 }
-                return true;
             }
             Log.warning(String.format(argumentTypeError, method.getName(), clazz.getClass().getName()));
         }
@@ -290,8 +307,10 @@ public class CommandManager implements TabExecutor {
     /**
      * 注册Tab补全
      *
-     * @param method 方法
-     * @param clazz  调用对象
+     * @param method
+     *            方法
+     * @param clazz
+     *            调用对象
      * @return 是否成功
      */
     private boolean registerTab(Method method, CommandExecutor clazz) {
diff --git a/src/main/java/pw/yumc/YumCore/commands/CommandParse.java b/src/main/java/pw/yumc/YumCore/commands/CommandParse.java
index e85fda1..0ebb168 100644
--- a/src/main/java/pw/yumc/YumCore/commands/CommandParse.java
+++ b/src/main/java/pw/yumc/YumCore/commands/CommandParse.java
@@ -1,19 +1,24 @@
 package pw.yumc.YumCore.commands;
 
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
+
 import pw.yumc.YumCore.bukkit.Log;
 import pw.yumc.YumCore.commands.annotation.Default;
 import pw.yumc.YumCore.commands.annotation.KeyValue;
 import pw.yumc.YumCore.commands.annotation.Limit;
 import pw.yumc.YumCore.commands.exception.CommandParseException;
 
-import java.lang.annotation.Annotation;
-import java.lang.reflect.Method;
-import java.util.*;
-
 /**
  * 命令参数解析
  *
@@ -37,12 +42,10 @@ public class CommandParse {
 
     public CommandParse(Class[] classes, Annotation[][] annons, boolean isMain) {
         this.isMain = isMain;
-        for (int i = 0; i < classes.length; i++) {
+        // 第一个参数实现了CommandSender忽略
+        for (int i = 1; i < classes.length; i++) {
             Class clazz = classes[i];
             Annotation[] annotations = annons[i];
-            if (clazz.isAssignableFrom(CommandSender.class)) {
-                continue;
-            }
             Parse parse = allparses.get(clazz);
             if (parse == null) {
                 if (!clazz.isEnum()) {
@@ -72,10 +75,10 @@ public class CommandParse {
                 String param = i < args.length ? args[i] : p.def;
                 pobjs.add(param == null ? null : p.parse(cmdArgs.getSender(), param));
             } catch (Exception e) {
-                Log.debug(e);
                 throw new CommandParseException(String.format("第 %s 个参数 ", isMain ? 1 : 2 + i) + e.getMessage());
             }
         }
+        Log.d("解析参数: %s => %s", Arrays.toString(args), pobjs);
         return pobjs.toArray();
     }
 
@@ -205,14 +208,14 @@ public class CommandParse {
             return this;
         }
 
-        public void throwRange() {
-            throwRange(null);
-        }
-
         public void throwException(String str, Object... objects) {
             throw new CommandParseException(String.format(str, objects));
         }
 
+        public void throwRange() {
+            throwRange(null);
+        }
+
         public void throwRange(String str) {
             throw new CommandParseException(String.format(str == null ? "范围必须在 %s 到 %s 之间!" : str, min, max));
         }
diff --git a/src/main/java/pw/yumc/YumCore/commands/annotation/Help.java b/src/main/java/pw/yumc/YumCore/commands/annotation/Help.java
index 31a421e..96a677e 100644
--- a/src/main/java/pw/yumc/YumCore/commands/annotation/Help.java
+++ b/src/main/java/pw/yumc/YumCore/commands/annotation/Help.java
@@ -15,23 +15,6 @@ import java.lang.annotation.Target;
 @Target(ElementType.METHOD)
 @Retention(RetentionPolicy.RUNTIME)
 public @interface Help {
-    public static Help DEFAULT = new Help() {
-        @Override
-        public Class<? extends Annotation> annotationType() {
-            return Help.class;
-        }
-
-        @Override
-        public String possibleArguments() {
-            return "这家伙很懒";
-        }
-
-        @Override
-        public String value() {
-            return "没写帮助信息";
-        }
-    };
-
     /**
      * @return 当前命令可能需要的参数
      */
diff --git a/src/main/java/pw/yumc/YumCore/commands/info/CommandInfo.java b/src/main/java/pw/yumc/YumCore/commands/info/CommandInfo.java
index 2357469..ed50aa3 100644
--- a/src/main/java/pw/yumc/YumCore/commands/info/CommandInfo.java
+++ b/src/main/java/pw/yumc/YumCore/commands/info/CommandInfo.java
@@ -1,5 +1,6 @@
 package pw.yumc.YumCore.commands.info;
 
+import java.lang.annotation.Annotation;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Arrays;
@@ -24,8 +25,8 @@ import pw.yumc.YumCore.commands.exception.CommandParseException;
 /**
  * 命令信息存储类
  *
- * @since 2016年7月23日 上午9:56:42
  * @author 喵♂呜
+ * @since 2016年7月23日 上午9:56:42
  */
 public class CommandInfo {
     public static CommandInfo Unknow = new CommandInfo();
@@ -35,6 +36,22 @@ public class CommandInfo {
     private static String cmdErr = "§6错误原因: §4命令参数不正确!";
     private static String cmdUse = "§6使用方法: §e/%s %s %s";
     private static String cmdDes = "§6命令描述: §3%s";
+    private static Help defHelp = new Help() {
+        @Override
+        public Class<? extends Annotation> annotationType() {
+            return Help.class;
+        }
+
+        @Override
+        public String possibleArguments() {
+            return "这家伙很懒";
+        }
+
+        @Override
+        public String value() {
+            return "没写帮助信息";
+        }
+    };
     private Object origin;
     private Method method;
     private String name;
@@ -55,7 +72,7 @@ public class CommandInfo {
         this.executors = Arrays.asList(command.executor());
         this.executorStr = eS(executors);
         this.command = command;
-        this.help = help;
+        this.help = help != null ? help : defHelp;
         this.async = async;
         this.sort = sort;
         this.parse = parse;
@@ -78,10 +95,8 @@ public class CommandInfo {
     /**
      * 解析CommandInfo
      *
-     * @param method
-     *            方法
-     * @param origin
-     *            源对象
+     * @param method 方法
+     * @param origin 源对象
      * @return {@link CommandInfo}
      */
     public static CommandInfo parse(Method method, Object origin) {
@@ -91,7 +106,7 @@ public class CommandInfo {
             Async async = method.getAnnotation(Async.class);
             Sort sort = method.getAnnotation(Sort.class);
             CommandParse cp = CommandParse.get(method);
-            return new CommandInfo(method, origin, command, help != null ? help : Help.DEFAULT, async != null, sort != null ? sort.value() : 50, cp);
+            return new CommandInfo(method, origin, command, help, async != null, sort != null ? sort.value() : 50, cp);
         }
         return null;
     }
@@ -110,8 +125,7 @@ public class CommandInfo {
     /**
      * 执行命令
      *
-     * @param cmdArgs
-     *            命令参数
+     * @param cmdArgs 命令参数
      * @return 是否执行成功
      */
     public boolean execute(final CommandArgument cmdArgs) {
@@ -183,8 +197,7 @@ public class CommandInfo {
     /**
      * 验证命令是否匹配
      *
-     * @param cmd
-     *            需验证命令
+     * @param cmd 需验证命令
      * @return 是否匹配
      */
     public boolean isValid(String cmd) {
@@ -194,8 +207,7 @@ public class CommandInfo {
     /**
      * 检查命令
      *
-     * @param info
-     *            命令信息
+     * @param cmdArgs 命令信息
      * @return 是否验证通过
      */
     private boolean check(CommandArgument cmdArgs) {
@@ -206,8 +218,8 @@ public class CommandInfo {
     private boolean checkArgs(CommandSender sender, CommandArgument cmdArgs) {
         if (cmdArgs.getArgs().length < command.minimumArguments()) {
             Log.toSender(sender, cmdErr);
-            Log.toSender(sender, String.format(cmdUse, cmdArgs.getAlias(), getName(), help.possibleArguments()));
-            Log.toSender(sender, String.format(cmdDes, help.value()));
+            Log.toSender(sender, cmdUse, cmdArgs.getAlias(), getName(), help.possibleArguments());
+            Log.toSender(sender, cmdDes, help.value());
             return false;
         }
         return true;
@@ -215,8 +227,8 @@ public class CommandInfo {
 
     private boolean checkPerm(CommandSender sender) {
         String perm = command.permission();
-        if (perm != null && !"".equals(perm) && !sender.hasPermission(perm)) {
-            Log.toSender(sender, String.format(losePerm, perm));
+        if (!"".equals(perm) && !sender.hasPermission(perm)) {
+            Log.toSender(sender, losePerm, perm);
             return false;
         }
         return true;
@@ -224,7 +236,7 @@ public class CommandInfo {
 
     private boolean checkSender(CommandSender sender) {
         if (!executors.contains(Executor.ALL) && !executors.contains(Executor.valueOf(sender))) {
-            Log.toSender(sender, String.format(onlyExecutor, executorStr));
+            Log.toSender(sender, onlyExecutor, executorStr);
             return false;
         }
         return true;