diff --git a/src/test/java/youhong/ai/mymapper/command/constant/CommandConsTant.java b/src/test/java/youhong/ai/mymapper/command/constant/CommandConsTant.java
index db07d2d..2dd6fff 100644
--- a/src/test/java/youhong/ai/mymapper/command/constant/CommandConsTant.java
+++ b/src/test/java/youhong/ai/mymapper/command/constant/CommandConsTant.java
@@ -33,4 +33,7 @@ public class CommandConsTant {
 	
 	public static final String VARIABLE_PREPARED_STATEMENT = "#{";
 	
+	
+	public static final char[] COMMAND_PRE_FIX = new char[]{'m', 'y', '-'};
+	
 }
diff --git a/src/test/java/youhong/ai/mymapper/util/ParseSqlUtil.java b/src/test/java/youhong/ai/mymapper/util/ParseSqlUtil.java
index d44a1fa..49f0667 100644
--- a/src/test/java/youhong/ai/mymapper/util/ParseSqlUtil.java
+++ b/src/test/java/youhong/ai/mymapper/util/ParseSqlUtil.java
@@ -22,8 +22,6 @@ import java.util.Objects;
  */
 public class ParseSqlUtil {
 	
-	private final char[] commandPrefix = new char[]{'m', 'y', '-'};
-	
 	
 	public final static ThreadLocal<Map<String, Object>> PARSE_PARAM_LOCALE = new ThreadLocal<>();
 	public final static ThreadLocal<Map<String, Object>> PARSE_TEMP_PARAM_LOCALE = new ThreadLocal<>();
@@ -75,7 +73,7 @@ public class ParseSqlUtil {
 					String tempSql = parseStatement(sqlBuilder.toString());
 					sqlBuilder.delete(0, sqlBuilder.length());
 					sqlBuilder.append(tempSql);
-					i += commandPrefix.length + 1;
+					i += CommandConsTant.COMMAND_PRE_FIX.length + 1;
 					SqlCommandDefinition commandDefinition = parseCommand(chars, i);
 					sqlBuilder.append(commandDefinition.getCommandContent());
 					i += commandDefinition.getCommandLength();
@@ -139,10 +137,10 @@ public class ParseSqlUtil {
 	}
 	
 	private boolean checkCommand(char[] chars, int index) {
-		if (index + commandPrefix.length + 1 >= chars.length) {
+		if (index + CommandConsTant.COMMAND_PRE_FIX.length + 1 >= chars.length) {
 			return false;
 		}
-		for (char prefix : commandPrefix) {
+		for (char prefix : CommandConsTant.COMMAND_PRE_FIX) {
 			if (prefix != chars[++index]) {
 				return false;
 			}