diff --git a/src/main/java/com/cyfonly/flogger/FLogger.java b/src/main/java/com/cyfonly/flogger/FLogger.java
index 337c120..fbfad51 100644
--- a/src/main/java/com/cyfonly/flogger/FLogger.java
+++ b/src/main/java/com/cyfonly/flogger/FLogger.java
@@ -1,6 +1,7 @@
 package com.cyfonly.flogger;
 
 import com.cyfonly.flogger.constants.Constant;
+import com.cyfonly.flogger.constants.Constant.LogLevel;
 import com.cyfonly.flogger.strategy.LogManager;
 import com.cyfonly.flogger.utils.CommUtil;
 import com.cyfonly.flogger.utils.TimeUtil;
@@ -21,7 +22,7 @@ public class FLogger {
 	
 	public FLogger(){
 		Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
-			@Override
+//			@Override
 			public void run() {
 				close();
 			}
@@ -40,7 +41,7 @@ public static synchronized FLogger getInstance(){
 	 * @param logMsg 日志内容
 	 */
 	public void debug(String logMsg){
-		writeLog("debug",Constant.DEBUG,logMsg);
+		writeLog("debug",LogLevel.DEBUG,logMsg);
 	}
 	
 	/**
@@ -48,7 +49,7 @@ public void debug(String logMsg){
 	 * @param logMsg 日志内容
 	 */
 	public void info(String logMsg){
-		writeLog("info",Constant.INFO,logMsg);
+		writeLog("info",LogLevel.INFO,logMsg);
 	}
 	
 	/**
@@ -56,7 +57,7 @@ public void info(String logMsg){
 	 * @param logMsg 日志内容
 	 */
 	public void warn(String logMsg){
-		writeLog("warn",Constant.WARN,logMsg);
+		writeLog("warn",LogLevel.WARN,logMsg);
 	}
 	
 	/**
@@ -64,7 +65,7 @@ public void warn(String logMsg){
 	 * @param logMsg 日志内容
 	 */
 	public void error(String logMsg){
-		writeLog("error",Constant.ERROR,logMsg);
+		writeLog("error",LogLevel.ERROR,logMsg);
 	}
 	
 	/**
@@ -72,7 +73,7 @@ public void error(String logMsg){
 	 * @param logMsg 日志内容
 	 */
 	public void fatal(String logMsg){
-		writeLog("fatal",Constant.FATAL,logMsg);
+		writeLog("fatal",LogLevel.FATAL,logMsg);
 	}
 	
 	/**
@@ -80,8 +81,8 @@ public void fatal(String logMsg){
 	 * @param level 日志级别
 	 * @param logMsg 日志内容
 	 */
-	public void writeLog(int level,String logMsg){
-		writeLog(Constant.LOG_DESC_MAP.get(String.valueOf(level)).toLowerCase(),level,logMsg);
+	public void writeLog(LogLevel level,String logMsg){
+		writeLog(level.name(),level,logMsg);
 	}
 	
 	/**
@@ -90,11 +91,11 @@ public void writeLog(int level,String logMsg){
 	 * @param level 日志级别
 	 * @param logMsg 日志内容
 	 */
-	public void writeLog(String logFileName, int level, String logMsg){
-		if(logMsg != null && Constant.CFG_LOG_LEVEL.indexOf(""+level) >= 0){
+	public void writeLog(String logFileName, LogLevel level, String logMsg){
+		if(logMsg != null && CommUtil.contains(level)){
 			StringBuffer sb = new StringBuffer(logMsg.length() + 100);
 			sb.append("[");
-			sb.append(Constant.LOG_DESC_MAP.get(String.valueOf(level)));
+			sb.append(level.name());
 			sb.append("] ");
 			sb.append(TimeUtil.getFullDateTime());
 			sb.append(" [");
@@ -105,7 +106,7 @@ public void writeLog(String logFileName, int level, String logMsg){
 			logManager.addLog(logFileName, sb);
 			
 			//错误信息强制打印到控制台；若 CONSOLE_PRINT 配置为 true，也将日志打印到控制台
-			if(Constant.ERROR == level || Constant.FATAL == level || Constant.CONSOLE_PRINT){
+			if(LogLevel.ERROR == level || LogLevel.FATAL == level || Constant.CONSOLE_PRINT){
 				try{
 					System.out.print(new String(sb.toString().getBytes(Constant.CFG_CHARSET_NAME),Constant.CFG_CHARSET_NAME));
 				}catch(Exception e){
diff --git a/src/main/java/com/cyfonly/flogger/constants/Constant.java b/src/main/java/com/cyfonly/flogger/constants/Constant.java
index ef69ce0..c479ef9 100644
--- a/src/main/java/com/cyfonly/flogger/constants/Constant.java
+++ b/src/main/java/com/cyfonly/flogger/constants/Constant.java
@@ -11,16 +11,13 @@
 public final class Constant {
 
 	//------------------日志类型
-	/** 调试信息  */
-	public final static int DEBUG = 0;
-	/** 普通信息 */
-	public final static int INFO = 1;
-	/** 警告信息 */	
-	public final static int WARN = 2;
-	/** 错误信息 */
-	public final static int ERROR = 3;
-	/** 严重错误信息 */
-	public final static int FATAL = 4;
+	public static enum LogLevel {
+		DEBUG,/** 调试信息  */
+		INFO,/** 普通信息 */
+		WARN,/** 警告信息 */	
+		ERROR,/** 错误信息 */
+		FATAL/** 严重错误信息 */
+	}
 	
 	/**日志级别*/
 	public static String CFG_LOG_LEVEL = CommUtil.getConfigByString("LOG_LEVEL","0,1,2,3,4");
@@ -34,14 +31,4 @@ public final class Constant {
 	/**日志文件路径*/
 	public static String CFG_LOG_PATH = CommUtil.getConfigByString("LOG_PATH","./log");
 	
-	/** 日志类型描述map*/
-	@SuppressWarnings("serial")
-	public static Map<String, String> LOG_DESC_MAP = new HashMap<String, String>(){{
-		put("0","DEBUG");
-		put("1","INFO");
-		put("2","WARN");
-		put("3","ERROR");
-		put("4","FATAL");
-	}};
-	
 }
\ No newline at end of file
diff --git a/src/main/java/com/cyfonly/flogger/utils/CommUtil.java b/src/main/java/com/cyfonly/flogger/utils/CommUtil.java
index f5192c3..5371862 100644
--- a/src/main/java/com/cyfonly/flogger/utils/CommUtil.java
+++ b/src/main/java/com/cyfonly/flogger/utils/CommUtil.java
@@ -7,6 +7,7 @@
 import java.util.HashMap;
 import java.util.Properties;
 import com.cyfonly.flogger.constants.Constant;
+import com.cyfonly.flogger.constants.Constant.LogLevel;
 
 /**
  * 公用工具类
@@ -181,4 +182,23 @@ public static String getExpStack(Exception e) {
 		return bo.toString();
 	}
 	
+	/** 
+	 * @Description: 验证是否是声明的几种日志级别 
+	 * @date 2017年11月28日 下午5:05:40 
+	 * @param @param level
+	 * @param @return
+	 * @return boolean
+	 * @throws 
+	*/  
+	public static boolean contains(LogLevel level){
+		if(level==null){
+			return false;
+		}
+		for (LogLevel value : LogLevel.values()) {
+			if(value==level){//有匹配，返回true
+				return true;
+			}
+		}
+		return false;
+	}
 }
diff --git a/src/test/java/com/yun/flogger/test/FloggerTest.java b/src/test/java/com/yun/flogger/test/FloggerTest.java
index b0d9759..dde0e0e 100644
--- a/src/test/java/com/yun/flogger/test/FloggerTest.java
+++ b/src/test/java/com/yun/flogger/test/FloggerTest.java
@@ -1,7 +1,7 @@
 package com.yun.flogger.test;
 
 import com.cyfonly.flogger.FLogger;
-import com.cyfonly.flogger.constants.Constant;
+import com.cyfonly.flogger.constants.Constant.LogLevel;
 
 public class FloggerTest {
 	
@@ -11,9 +11,9 @@ public static void main(String[] args) {
 		//简便api,只需指定内容
 		logger.info("Here is your message...");
 		//指定日志级别和内容，文件名自动映射
-		logger.writeLog(Constant.INFO, "Here is your customized level message...");
+		logger.writeLog(LogLevel.DEBUG, "Here is your customized level message...");
 		//指定日志输出文件名、日志级别和内容
-		logger.writeLog("error", Constant.ERROR, "Here is your customized log file and level message...");
+		logger.writeLog("error", LogLevel.ERROR, "Here is your customized log file and level message...");
 	}
 
 }