diff --git a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
index 8beca16..cf4ce7c 100644
--- a/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
+++ b/org.ntlab.traceCollector/src/org/ntlab/traceCollector/tracer/trace/Alias.java
@@ -17,7 +17,7 @@
 	 * ��1: d = a.m(b, c);<br>
 	 * <br>
 	 * ��1�̎��s���ɂ�����, a�̓��\�b�h�Ăяo���̃��V�[�o�Ȃ̂�0, b�̓��\�b�h�Ăяo����1�Ԗڂ̎������Ȃ̂�1,<br>
-	 * c�̓��\�b�h�Ăяo����2�Ֆڂ̎������Ȃ̂�2, a.m(b, c)�̖߂�l��-1 �ƂȂ�.<br>
+	 * c�̓��\�b�h�Ăяo����2�Ԗڂ̎������Ȃ̂�2, a.m(b, c)�̖߂�l��-1 �ƂȂ�.<br>
 	 * <br>
 	 * ��2: d = a.f;<br>
 	 * ��2�̎��s���ɂ�����, a�̓t�B�[���h�̃R���e�i�Ȃ̂�0, b�̓t�B�[���h�Ȃ̂�1 �ƂȂ�.
@@ -47,5 +47,17 @@
 
 	public int getOccurrenceExp() {
 		return occurrenceExp;
-	}	
+	}
+	
+	@Override
+	public String toString() {
+		StringBuilder str = new StringBuilder();
+		String indent = "  ";
+		str.append("objId: " + objectId + "\n");
+		str.append("tp: " + occurrencePoint + "\n");
+		str.append(indent + "signature: " + occurrencePoint.getMethodExecution().getSignature() + "\n");
+		str.append(indent + "lineNo: " + occurrencePoint.getStatement().getLineNo() + "\n");
+		str.append("occurrenceExp: " + occurrenceExp + "\n");
+		return str.toString();
+	}
 }