diff --git a/op-modules/op-energy/src/main/resources/mapper/report/ReportPointDnbMapper.xml b/op-modules/op-energy/src/main/resources/mapper/report/ReportPointDnbMapper.xml
index 7647cb861..bc40f961f 100644
--- a/op-modules/op-energy/src/main/resources/mapper/report/ReportPointDnbMapper.xml
+++ b/op-modules/op-energy/src/main/resources/mapper/report/ReportPointDnbMapper.xml
@@ -123,31 +123,40 @@
         where report_point_dnb.objid = #{objid}
     </select>
     <select id="energyConsumptionReportByTime" resultType="java.util.Map">
-        select ert.pointTime, sum(isnull(ert.expend,0)) expend
-        from (
-        select left(CONVERT(VARCHAR(19), rpd.begin_time, 120), #{timeSub}) pointTime, rpd.expend
-        from report_point_dnb rpd
-        left join base_monitor_info m on m.monitor_id = rpd.monitor_id
-        <where>
-            <if test="publicShareType != null  and publicShareType != ''">and m.public_share_type = #{publicShareType}
-            </if>
-            <if test="monitorIdList != null  and monitorIdList.size > 0">
-                and rpd.monitor_id IN
-                <foreach item="monitorId" collection="monitorIdList" open="(" separator="," close=")">
-                    #{monitorId}
-                </foreach>
-            </if>
-            <if test="monitorId != null  and monitorId != ''">and rpd.monitor_id = #{monitorId}</if>
-            <if test="startTime != null and startTime != '' and endTime != null and endTime != ''">
-                and rpd.begin_time between #{startTime} and #{endTime}
-            </if>
-            <if test="startDay != null and startDay != '' and endDay != null and endDay != ''">
-                and left(CONVERT(VARCHAR(19), rpd.begin_time, 120), 10) between #{startDay} and #{endDay}
-            </if>
-        </where>
-        ) ert
-        group by ert.pointTime
-        order by ert.pointTime
+        SELECT
+            month_tag AS pointTime,
+            MAX(meter_value) - MIN(meter_value) expend
+        FROM
+        (
+            SELECT
+                rpd.meter_value,
+                rpd.monitor_id,
+                FORMAT ( rpd.record_time, 'yyyy-MM' ) AS month_tag,
+                ROW_NUMBER ( ) OVER ( PARTITION BY FORMAT ( rpd.record_time, 'yyyy-MM' ), rpd.monitor_id ORDER BY rpd.record_time ASC ) AS rn_asc,
+                ROW_NUMBER ( ) OVER ( PARTITION BY FORMAT ( rpd.record_time, 'yyyy-MM' ), rpd.monitor_id ORDER BY rpd.record_time DESC ) AS rn_desc
+            FROM report_point_dnb rpd
+            LEFT JOIN base_monitor_info m ON m.monitor_id = rpd.monitor_id
+            <where>
+                <if test="publicShareType != null  and publicShareType != ''">and m.public_share_type = #{publicShareType}
+                </if>
+                <if test="monitorIdList != null  and monitorIdList.size > 0">
+                    and rpd.monitor_id IN
+                    <foreach item="monitorId" collection="monitorIdList" open="(" separator="," close=")">
+                        #{monitorId}
+                    </foreach>
+                </if>
+                <if test="monitorId != null  and monitorId != ''">and rpd.monitor_id = #{monitorId}</if>
+                <if test="startTime != null and startTime != '' and endTime != null and endTime != ''">
+                    and rpd.begin_time between #{startTime} and #{endTime}
+                </if>
+                <if test="startDay != null and startDay != '' and endDay != null and endDay != ''">
+                    and left(CONVERT(VARCHAR(19), rpd.begin_time, 120), 10) between #{startDay} and #{endDay}
+                </if>
+            </where>
+        ) a
+        WHERE rn_asc = 1 OR rn_desc = 1
+        GROUP BY month_tag
+        ORDER BY month_tag DESC
     </select>
 
     <select id="energyConsumptionAnalysisDetails" resultType="java.util.Map">