diff --git a/hutool-core/src/main/java/cn/hutool/core/date/CalendarUtil.java b/hutool-core/src/main/java/cn/hutool/core/date/CalendarUtil.java
index 774aabec5..4c6d3093c 100644
--- a/hutool-core/src/main/java/cn/hutool/core/date/CalendarUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/date/CalendarUtil.java
@@ -359,9 +359,7 @@ public class CalendarUtil {
 		if (cal1 == null || cal2 == null) {
 			throw new IllegalArgumentException("The date must not be null");
 		}
-		return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
-				cal1.get(Calendar.MONTH) == cal2.get(Calendar.MONTH) &&
-				cal1.get(Calendar.DAY_OF_WEEK) == cal2.get(Calendar.DAY_OF_WEEK);
+		return isSameDay(cal1, cal2);
 	}
 
 	/**
diff --git a/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java
index ceab8fe7e..0aea526a6 100644
--- a/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java
@@ -1006,13 +1006,15 @@ public class DateUtilTest {
 	}
 
 	@Test
-	public void test() {
+	public void isSameWeektest() {
 		// 周六与周日比较
 		final boolean isSameWeek = DateUtil.isSameWeek(DateTime.of("2022-01-01", "yyyy-MM-dd"), DateTime.of("2022-01-02", "yyyy-MM-dd"), true);
 		Assert.assertTrue(isSameWeek);
 		// 周日与周一比较
 		final boolean isSameWeek1 = DateUtil.isSameWeek(DateTime.of("2022-01-02", "yyyy-MM-dd"), DateTime.of("2022-01-03", "yyyy-MM-dd"), false);
 		Assert.assertTrue(isSameWeek1);
-
+		// 跨月比较
+		final boolean isSameWeek2 = DateUtil.isSameWeek(DateTime.of("2021-12-29", "yyyy-MM-dd"), DateTime.of("2022-01-01", "yyyy-MM-dd"), true);
+		Assert.assertTrue(isSameWeek2);
 	}
 }