diff --git a/src/main/java/com/genersoft/iot/vmp/conf/UserSetting.java b/src/main/java/com/genersoft/iot/vmp/conf/UserSetting.java
index f39cd8e60..adb733384 100644
--- a/src/main/java/com/genersoft/iot/vmp/conf/UserSetting.java
+++ b/src/main/java/com/genersoft/iot/vmp/conf/UserSetting.java
@@ -239,12 +239,16 @@ public class UserSetting {
     /**
      * 是否使用拉流的方式获取快照，默认false，避免流量大规模消耗，开启后则使用拉流的方式获取快照
      */
-    private boolean snapByPullStream = false;
+    private boolean alarmSnapByStream = false;
 
     /**
      * 报警订阅白名单，设置后只有在此列表中的上级平台才会接收报警订阅消息，默认不设置则不限制
      */
     private List<AlarmType> allowedAlarmType = new ArrayList<>();
 
+    /**
+     * 报警记录保留天数，超过此天数的报警记录将在每天凌晨自动清理，默认30天，设置为0则不自动清理
+     */
+    private int alarmKeepDays = 7;
 
 }
diff --git a/src/main/java/com/genersoft/iot/vmp/service/impl/AlarmServiceImpl.java b/src/main/java/com/genersoft/iot/vmp/service/impl/AlarmServiceImpl.java
index 8b41a9c6a..1397438ba 100644
--- a/src/main/java/com/genersoft/iot/vmp/service/impl/AlarmServiceImpl.java
+++ b/src/main/java/com/genersoft/iot/vmp/service/impl/AlarmServiceImpl.java
@@ -27,10 +27,11 @@ import org.springframework.context.event.EventListener;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
 
 import java.io.File;
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.List;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
@@ -93,6 +94,18 @@ public class AlarmServiceImpl implements IAlarmService {
         }
     }
 
+    @Scheduled(cron = "0 0 0 * * ?")
+    public void cleanExpiredAlarms() {
+        int keepDays = userSetting.getAlarmKeepDays();
+        if (keepDays <= 0) {
+            return;
+        }
+        String endTime = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
+                .format(new Date(System.currentTimeMillis() - (long) keepDays * 24 * 3600 * 1000));
+        int count = clearAlarmsByCondition(null, null, endTime);
+        log.info("自动清理过期报警记录完成，保留天数：{}，清理数量：{}", keepDays, count);
+    }
+
     @Scheduled(fixedDelay = 500)
     public void executeAlarmQueue() {
         if (alarmQueue.isEmpty()) {
@@ -171,7 +184,6 @@ public class AlarmServiceImpl implements IAlarmService {
     }
 
     @Override
-    @Transactional
     public int clearAlarmsByCondition(List<AlarmType> alarmType, String beginTime, String endTime) {
         Long beginTimeLong = null;
         Long endTimeLong = null;
diff --git a/src/main/resources/配置详情.yml b/src/main/resources/配置详情.yml
index 6cb938536..29461d186 100644
--- a/src/main/resources/配置详情.yml
+++ b/src/main/resources/配置详情.yml
@@ -269,7 +269,7 @@ user-settings:
     # 建议根据实际情况调整，过大可能会占用较多内存，过小可能会增加数据库查询压力,
     alarm-catch-size: 10000
     # 是否使用拉流的方式获取快照，默认false，避免流量大规模消耗，开启后则使用拉流的方式获取快照
-    snap-by-pull-stream: true
+    alarm-snap-by-stream: true
     # 是否使用拉流的方式获取快照，默认false，避免流量大规模消耗，开启后则使用拉流的方式获取快照
     allowed-alarm-type:
       - IntrusionDetection