diff --git a/shapelight-admin/src/main/java/net/shapelight/modules/ten/service/impl/TenPersonServiceImpl.java b/shapelight-admin/src/main/java/net/shapelight/modules/ten/service/impl/TenPersonServiceImpl.java
index b6f7dc0..ed68693 100644
--- a/shapelight-admin/src/main/java/net/shapelight/modules/ten/service/impl/TenPersonServiceImpl.java
+++ b/shapelight-admin/src/main/java/net/shapelight/modules/ten/service/impl/TenPersonServiceImpl.java
@@ -913,25 +913,26 @@ public class TenPersonServiceImpl implements TenPersonService {
             tenPersonDao.logicDeleteById(personId, cellId);
             tenRelationMapper.delete(new LambdaQueryWrapper<TenRelation>().eq(TenRelation::getStudentId,personId));
             Map<String, String> snPersons =  tenPersonSyncService.findGroupDevicePerson(personId,cellId);
-            String sn = snPersons.get("deviceSn");
-            TenDeviceEntity deviceEntity = tenDeviceService.findBySn(sn);
-            if(deviceEntity==null){
-                continue;
-            }
-            String[] persons = snPersons.get("plist").split(",");
-            List<TenPersonOperationVo> list = new ArrayList<>();
-            for (String personStr : persons) {
-                String[] personInfoStr = personStr.split("_");
-                Long personCode = Long.parseLong(personInfoStr[0]);
-                Date lastUpdateTime = DateUtils.stringToDate(personInfoStr[1], DateUtils.DATE_TIME_PATTERN);
+            if(snPersons!=null) {
+                String sn = snPersons.get("deviceSn");
+                TenDeviceEntity deviceEntity = tenDeviceService.findBySn(sn);
+                if(deviceEntity==null){
+                    continue;
+                }
+                String[] persons = snPersons.get("plist").split(",");
+                List<TenPersonOperationVo> list = new ArrayList<>();
+                for (String personStr : persons) {
+                    String[] personInfoStr = personStr.split("_");
+                    Long personCode = Long.parseLong(personInfoStr[0]);
+                    Date lastUpdateTime = DateUtils.stringToDate(personInfoStr[1], DateUtils.DATE_TIME_PATTERN);
 
-                TenPersonSyncEntity syncEntity = tenPersonSyncService.findByDeviceIdAndPersonId(deviceEntity.getDeviceId(), personCode, cellId);
-                syncEntity.setLastUpdateTime(lastUpdateTime);
-                syncEntity.setState(Constant.PERSON_SYNC_DELETE);
-                tenPersonSyncService.updateById(syncEntity);
+                    TenPersonSyncEntity syncEntity = tenPersonSyncService.findByDeviceIdAndPersonId(deviceEntity.getDeviceId(), personCode, cellId);
+                    syncEntity.setLastUpdateTime(lastUpdateTime);
+                    syncEntity.setState(Constant.PERSON_SYNC_DELETE);
+                    tenPersonSyncService.updateById(syncEntity);
+                }
             }
 
-
         }
 
 
diff --git a/shapelight-admin/src/main/resources/mapper/ten/TenPersonSyncDao.xml b/shapelight-admin/src/main/resources/mapper/ten/TenPersonSyncDao.xml
index db929eb..3dc17b5 100644
--- a/shapelight-admin/src/main/resources/mapper/ten/TenPersonSyncDao.xml
+++ b/shapelight-admin/src/main/resources/mapper/ten/TenPersonSyncDao.xml
@@ -175,9 +175,10 @@
     <select id="findGroupDevicePerson" resultType="map">
         select device_sn as deviceSn,group_concat(person_id,"_",last_update_time separator ",") as plist
         from ten_person_sync_${cellId} where 1= 1
-        <if test="personIds != null">
+        <if test="personId != null">
             and person_id = #{personId}
         </if>
+        group by device_sn
     </select>
 
     <select id="findDeviceAllDeletePersons" resultType="net.shapelight.modules.ten.entity.TenPersonSyncEntity">