diff --git a/src/main/java/com/alibaba/excel/annotation/FieldType.java b/src/main/java/com/alibaba/excel/annotation/FieldType.java
index e5dc48df..73729959 100644
--- a/src/main/java/com/alibaba/excel/annotation/FieldType.java
+++ b/src/main/java/com/alibaba/excel/annotation/FieldType.java
@@ -3,7 +3,6 @@ package com.alibaba.excel.annotation;
 /**
  *
  * @author jipengfei
- * @date 2017/03/15
  */
 public enum FieldType {
 
diff --git a/src/main/java/com/alibaba/excel/constant/ExcelXmlConstants.java b/src/main/java/com/alibaba/excel/constant/ExcelXmlConstants.java
index 8403f9e3..dcd2d5a4 100644
--- a/src/main/java/com/alibaba/excel/constant/ExcelXmlConstants.java
+++ b/src/main/java/com/alibaba/excel/constant/ExcelXmlConstants.java
@@ -2,7 +2,6 @@ package com.alibaba.excel.constant;
 
 /**
  * @author jipengfei
- * @date 2017/08/24
  */
 public class ExcelXmlConstants {
     public static final String DIMENSION = "dimension";