diff --git a/neutrino-core/src/main/java/fun/asgc/neutrino/core/util/DateUtil.java b/neutrino-core/src/main/java/fun/asgc/neutrino/core/util/DateUtil.java
index 377909b5..af093be2 100644
--- a/neutrino-core/src/main/java/fun/asgc/neutrino/core/util/DateUtil.java
+++ b/neutrino-core/src/main/java/fun/asgc/neutrino/core/util/DateUtil.java
@@ -145,6 +145,19 @@ public class DateUtil {
 		return cal.getTime();
 	}
 
+	/**
+	 * 获取该日期当月第一天
+	 *
+	 * @param date 日期
+	 * @return 结果日期
+	 */
+	public static Date getMonthBegin(Date date) {
+		Calendar calendar = Calendar.getInstance();
+		calendar.setTime(getDayBegin(date));
+		calendar.set(Calendar.DAY_OF_MONTH, 1);
+		return calendar.getTime();
+	}
+
 	/**
 	 * 获取该日期当月最后一天
 	 *
@@ -153,10 +166,10 @@ public class DateUtil {
 	 */
 	public static Date getMonthEnd(Date date) {
 		Calendar calendar = Calendar.getInstance();
-		calendar.setTime(getDayEnd(date));
+		calendar.setTime(getDayBegin(date));
 		calendar.add(Calendar.MONTH, 1);
 		calendar.set(Calendar.DAY_OF_MONTH, 1);
-		calendar.add(Calendar.DAY_OF_MONTH, -1);
+		calendar.add(Calendar.MILLISECOND, -1);
 		return calendar.getTime();
 	}
 
diff --git a/neutrino-proxy-server/src/main/java/fun/asgc/neutrino/proxy/server/job/FlowReportForMonthJob.java b/neutrino-proxy-server/src/main/java/fun/asgc/neutrino/proxy/server/job/FlowReportForMonthJob.java
index e06c2478..fdb07fdf 100644
--- a/neutrino-proxy-server/src/main/java/fun/asgc/neutrino/proxy/server/job/FlowReportForMonthJob.java
+++ b/neutrino-proxy-server/src/main/java/fun/asgc/neutrino/proxy/server/job/FlowReportForMonthJob.java
@@ -63,11 +63,11 @@ public class FlowReportForMonthJob implements IJobHandler {
         Date now = new Date();
         String dateStr = DateUtil.format(DateUtil.addDate(now, Calendar.MONTH, -1), "yyyy-MM");
         Date date = DateUtil.parse(dateStr, "yyyy-MM");
-        Date startDayDate = DateUtil.getDayBegin(date);
-        Date endEndDate = DateUtil.getDayEnd(date);
+        Date startDayDate = DateUtil.getMonthBegin(date);
+        Date endEndDate = DateUtil.getMonthEnd(date);
 
         // 删除原来的记录
-        flowReportDayMapper.deleteByDateStr(dateStr);
+        flowReportMonthMapper.deleteByDateStr(dateStr);
 
         // 查询上个月的天级别统计数据
         List<FlowReportDayDO> flowReportDayList = flowReportDayMapper.findListByDateRange(startDayDate, endEndDate);