diff --git a/LOG.md b/LOG.md
index a6857bc..6ccd540 100644
--- a/LOG.md
+++ b/LOG.md
@@ -10,6 +10,8 @@
 
 ## v2.2.5
 
+- DateTimeUtils 新增可根据时间戳获取当天最大或最小的方法
+
 
 
 ## v2.2.4
diff --git a/src/main/java/com/fengwenyi/javalib/convert/DateTimeUtils.java b/src/main/java/com/fengwenyi/javalib/convert/DateTimeUtils.java
index 5e67ae3..a727522 100644
--- a/src/main/java/com/fengwenyi/javalib/convert/DateTimeUtils.java
+++ b/src/main/java/com/fengwenyi/javalib/convert/DateTimeUtils.java
@@ -408,4 +408,31 @@ public static boolean judgeInTimeDurationWithBoundary(LocalTime time, LocalTime
         return time.compareTo(startTime) >= 0 || time.compareTo(endTime) <= 0;
     }
 
+
+    /**
+     * 时间戳转 LocalDateTime （当天最小值）
+     * @param timestamp 时间戳
+     * @return 当天最小值
+     */
+    public static LocalDateTime toLocalDateTimeMin(Long timestamp) {
+        LocalDateTime localDateTime = toLocalDateTime(timestamp);
+        if (Objects.isNull(localDateTime)) {
+            return null;
+        }
+        return localDateTime.with(LocalTime.MIN);
+    }
+
+    /**
+     * 时间戳转 LocalDateTime （当天最大值）
+     * @param timestamp 时间戳
+     * @return 当天最大值
+     */
+    public static LocalDateTime toLocalDateTimeMax(Long timestamp) {
+        LocalDateTime localDateTime = toLocalDateTime(timestamp);
+        if (Objects.isNull(localDateTime)) {
+            return null;
+        }
+        return localDateTime.with(LocalTime.MAX);
+    }
+
 }