diff --git a/pom.xml b/pom.xml
index af3cce9..f50ffb7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -31,7 +31,7 @@
     </parent>
 
     <properties>
-        <elasticsearch.version>1.1.1</elasticsearch.version>
+        <elasticsearch.version>1.0.0</elasticsearch.version>
     </properties>
 
   <repositories>
diff --git a/src/main/java/org/wltea/analyzer/core/CJKSegmenter.java b/src/main/java/org/wltea/analyzer/core/CJKSegmenter.java
index d72eaa7..a31a5d4 100644
--- a/src/main/java/org/wltea/analyzer/core/CJKSegmenter.java
+++ b/src/main/java/org/wltea/analyzer/core/CJKSegmenter.java
@@ -58,7 +58,7 @@ class CJKSegmenter implements ISegmenter {
 				//处理词段队列
 				Hit[] tmpArray = this.tmpHits.toArray(new Hit[this.tmpHits.size()]);
 				for(Hit hit : tmpArray){
-					hit = Dictionary.getSingleton().matchWithHit(String.valueOf(context.getSegmentBuff()).toLowerCase().toCharArray(), context.getCursor() , hit);
+					hit = Dictionary.getSingleton().matchWithHit(context.getSegmentBuff(), context.getCursor() , hit);
 					if(hit.isMatch()){
 						//输出当前的词
 						Lexeme newLexeme = new Lexeme(context.getBufferOffset() , hit.getBegin() , context.getCursor() - hit.getBegin() + 1 , Lexeme.TYPE_CNWORD);
@@ -77,7 +77,7 @@ class CJKSegmenter implements ISegmenter {
 			
 			//*********************************
 			//再对当前指针位置的字符进行单字匹配
-			Hit singleCharHit = Dictionary.getSingleton().matchInMainDict(String.valueOf(context.getSegmentBuff()).toLowerCase().toCharArray(), context.getCursor(), 1);
+			Hit singleCharHit = Dictionary.getSingleton().matchInMainDict(context.getSegmentBuff(), context.getCursor(), 1);
 			if(singleCharHit.isMatch()){//首字成词
 				//输出当前的词
 				Lexeme newLexeme = new Lexeme(context.getBufferOffset() , context.getCursor() , 1 , Lexeme.TYPE_CNWORD);
diff --git a/src/main/java/org/wltea/analyzer/dic/Dictionary.java b/src/main/java/org/wltea/analyzer/dic/Dictionary.java
index 2e0f33f..6a76f2f 100644
--- a/src/main/java/org/wltea/analyzer/dic/Dictionary.java
+++ b/src/main/java/org/wltea/analyzer/dic/Dictionary.java
@@ -119,7 +119,7 @@ public class Dictionary {
 			for(String word : words){
 				if (word != null) {
 					//批量加载词条到主内存词典中
-					singleton._MainDict.fillSegment(word.trim().toLowerCase().toCharArray());
+					singleton._MainDict.fillSegment(word.trim().toCharArray());
 				}
 			}
 		}
@@ -133,7 +133,7 @@ public class Dictionary {
 			for(String word : words){
 				if (word != null) {
 					//批量屏蔽词条
-					singleton._MainDict.disableSegment(word.trim().toLowerCase().toCharArray());
+					singleton._MainDict.disableSegment(word.trim().toCharArray());
 				}
 			}
 		}
@@ -152,7 +152,7 @@ public class Dictionary {
 	 * @return Hit 匹配结果描述
 	 */
 	public Hit matchInMainDict(char[] charArray , int begin, int length){
-        return singleton._MainDict.match(String.valueOf(charArray).toLowerCase().toCharArray(), begin, length);
+        return singleton._MainDict.match(charArray, begin, length);
 	}
 	
 	/**
@@ -160,7 +160,7 @@ public class Dictionary {
 	 * @return Hit 匹配结果描述
 	 */
 	public Hit matchInQuantifierDict(char[] charArray , int begin, int length){
-		return singleton._QuantifierDict.match(String.valueOf(charArray).toLowerCase().toCharArray(), begin, length);
+		return singleton._QuantifierDict.match(charArray, begin, length);
 	}
 	
 	
@@ -179,7 +179,7 @@ public class Dictionary {
 	 * @return boolean
 	 */
 	public boolean isStopWord(char[] charArray , int begin, int length){			
-		return singleton._StopWords.match(String.valueOf(charArray).toLowerCase().toCharArray(), begin, length).isMatch();
+		return singleton._StopWords.match(charArray, begin, length).isMatch();
 	}	
 	
 	/**
@@ -205,7 +205,7 @@ public class Dictionary {
 			do {
 				theWord = br.readLine();
 				if (theWord != null && !"".equals(theWord.trim())) {
-					_MainDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
+					_MainDict.fillSegment(theWord.trim().toCharArray());
 				}
 			} while (theWord != null);
 			
@@ -255,7 +255,7 @@ public class Dictionary {
 						theWord = br.readLine();
                         if (theWord != null && !"".equals(theWord.trim())) {
 							//加载扩展词典数据到主内存词典中
-							_MainDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
+							_MainDict.fillSegment(theWord.trim().toCharArray());
 						}
 					} while (theWord != null);
 					
@@ -298,7 +298,7 @@ public class Dictionary {
             do {
                 theWord = br.readLine();
                 if (theWord != null && !"".equals(theWord.trim())) {
-                    _StopWords.fillSegment(theWord.trim().toLowerCase().toCharArray());
+                    _StopWords.fillSegment(theWord.trim().toCharArray());
                 }
             } while (theWord != null);
 
@@ -342,7 +342,7 @@ public class Dictionary {
 						theWord = br.readLine();
 						if (theWord != null && !"".equals(theWord.trim())) {
 							//加载扩展停止词典数据到内存中
-                            _StopWords.fillSegment(theWord.trim().toLowerCase().toCharArray());
+                            _StopWords.fillSegment(theWord.trim().toCharArray());
 						}
 					} while (theWord != null);
 					
@@ -383,7 +383,7 @@ public class Dictionary {
 			do {
 				theWord = br.readLine();
 				if (theWord != null && !"".equals(theWord.trim())) {
-					_QuantifierDict.fillSegment(theWord.trim().toLowerCase().toCharArray());
+					_QuantifierDict.fillSegment(theWord.trim().toCharArray());
 				}
 			} while (theWord != null);
 			
@@ -440,7 +440,6 @@ public class Dictionary {
     }
 
 
-
     private void loadSuffixDict(){
 
         _SuffixDict = new DictSegment((char)0);
diff --git a/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java b/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java
index befe4ee..bffd984 100644
--- a/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java
+++ b/src/main/java/org/wltea/analyzer/lucene/IKTokenizer.java
@@ -80,7 +80,7 @@ public final class IKTokenizer extends Tokenizer {
 		if(nextLexeme != null){
 			//将Lexeme转成Attributes
 			//设置词元文本
-			termAtt.append(nextLexeme.getLexemeText().toLowerCase());
+			termAtt.append(nextLexeme.getLexemeText());
 			//设置词元长度
 			termAtt.setLength(nextLexeme.getLength());
 			//设置词元位移