diff --git a/src/main/java/org/springblade/modules/business/utils/LocalDateTimeUtils.java b/src/main/java/org/springblade/modules/business/utils/LocalDateTimeUtils.java
index 756d0b0..52f87b2 100644
--- a/src/main/java/org/springblade/modules/business/utils/LocalDateTimeUtils.java
+++ b/src/main/java/org/springblade/modules/business/utils/LocalDateTimeUtils.java
@@ -115,7 +115,8 @@ public class LocalDateTimeUtils {
 	 * @return
 	 */
 	public static LocalDateTime last6MonStartTime() {
-		return LocalDateTime.of(LocalDate.now().minus(5L, ChronoUnit.MONTHS), LocalTime.MIN);
+		LocalDate date = LocalDate.now().minus(5L, ChronoUnit.MONTHS).with(TemporalAdjusters.firstDayOfMonth());
+		return LocalDateTime.of(date, LocalTime.MIN);
 	}
 
 	/**