diff --git a/newfiber-termites/newfiber-termites-dataup/src/main/resources/mapper/termite/DeviceInfoMapper.xml b/newfiber-termites/newfiber-termites-dataup/src/main/resources/mapper/termite/DeviceInfoMapper.xml
index c713a17..f50e6ec 100644
--- a/newfiber-termites/newfiber-termites-dataup/src/main/resources/mapper/termite/DeviceInfoMapper.xml
+++ b/newfiber-termites/newfiber-termites-dataup/src/main/resources/mapper/termite/DeviceInfoMapper.xml
@@ -151,7 +151,7 @@
         <result property="deviceCount" column="deviceCount"/>
     </resultMap>
     <select id="statistic" resultMap="statisticResult">
-        select tpi.project_name, t.project_code, count(1) as deviceCount, max(first_warn_datetime) as first_warn_datetime
+        select tpi.project_name, t.project_code, count(1) as deviceCount, min(first_warn_datetime) as first_warn_datetime
         from ter_device_info t
         <include refid="Join_Table"/>
         where t.del_flag = 0