diff --git a/src/main/resources/mapper/DataPetition12337Mapper.xml b/src/main/resources/mapper/DataPetition12337Mapper.xml
index 0ae3440..ac0bbf1 100644
--- a/src/main/resources/mapper/DataPetition12337Mapper.xml
+++ b/src/main/resources/mapper/DataPetition12337Mapper.xml
@@ -143,7 +143,7 @@
     <select id="getMailTrend12337" resultType="com.biutag.supervision.pojo.vo.EchartsVo">
         SELECT
             m.monthName AS `name`,
-            IFNULL(COUNT(dpc.create_time), 0) AS `value`
+            IFNULL(COUNT(dpc.discover_time), 0) AS `value`
         FROM   (
                    SELECT '01' AS month, '1月' AS monthName UNION ALL
                    SELECT '02', '2月' UNION ALL
@@ -159,8 +159,8 @@
                    SELECT '12', '12月'
                ) m
                    LEFT JOIN
-               data_petition_12337 dpc on DATE_FORMAT(dpc.create_time, '%m')=m.month
-                   AND YEAR(dpc.create_time)=#{year}
+               data_petition_12337 dpc on DATE_FORMAT(dpc.discover_time, '%m')=m.month
+                   AND YEAR(dpc.discover_time)=#{year}
         GROUP BY  m.monthName
         ORDER BY  m.month ASC;
     </select>