diff --git a/photo_review/photo_review.py b/photo_review/photo_review.py
index ce8dd70..f60eb0d 100644
--- a/photo_review/photo_review.py
+++ b/photo_review/photo_review.py
@@ -430,11 +430,11 @@ def main():
     while 1:
         session = MysqlSession()
         # 查询需要识别的案子
-        phhds = session.query(ZxPhhd.pk_phhd, ZxPhhd.exsuccess_flag).filter(ZxPhhd.exsuccess_flag == '1').limit(
-            PHHD_BATCH_SIZE).all()
+        phhds = session.query(ZxPhhd.pk_phhd).filter(ZxPhhd.exsuccess_flag == '1').limit(PHHD_BATCH_SIZE).all()
         # 将状态改为正在识别中
-        for phhd in phhds:
-            phhd.exsuccess_flag = '2'
+        pk_phhd_values = [phhd.pk_phhd for phhd in phhds]
+        update_flag = (update(ZxPhhd).where(ZxPhhd.pk_phhd.in_(pk_phhd_values)).values(exsuccess_flag=2))
+        session.execute(update_flag)
         session.commit()
         session.close()
         if phhds: