diff --git a/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
index d71606139..813fba971 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java
@@ -32,6 +32,9 @@ import java.util.concurrent.TimeUnit;
 /**
  * 时间工具类
  *
+ * @see LocalDateTimeUtil java8日志工具类
+ * @see DatePattern 日期常用格式工具类
+ *
  * @author xiaoleilu
  */
 public class DateUtil extends CalendarUtil {
diff --git a/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
index df88c5199..03e2c24ae 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/LocalDateTimeUtil.java
@@ -27,6 +27,9 @@ import java.util.TimeZone;
 /**
  * JDK8+中的{@link LocalDateTime} 工具类封装
  *
+ * @see DateUtil java7和一下版本，使用Date工具类
+ * @see DatePattern 常用格式工具类
+ *
  * @author looly
  * @since 5.3.9
  */