diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
index 1bb8a74..799141b 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
@@ -9,6 +9,7 @@
 import com.casic.missiles.modular.system.model.AlarmThreshold;
 import com.casic.missiles.modular.system.service.IAlarmService;
 import com.casic.missiles.modular.system.service.IAlarmThresholdService;
+import com.casic.missiles.modular.system.utils.TimeUtil;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
@@ -47,7 +48,8 @@
     @PostMapping(value = "/update")
     @ResponseBody
     public Object update(@RequestBody AlarmThreshold threshold) {
-        thresholdService.checkAndUpdate(threshold);
+        threshold.setUpdateTime(TimeUtil.getCurrentTime());
+        thresholdService.save(threshold);
         return ResponseData.success();
     }
 

diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
index 1bb8a74..799141b 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
@@ -9,6 +9,7 @@
 import com.casic.missiles.modular.system.model.AlarmThreshold;
 import com.casic.missiles.modular.system.service.IAlarmService;
 import com.casic.missiles.modular.system.service.IAlarmThresholdService;
+import com.casic.missiles.modular.system.utils.TimeUtil;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
@@ -47,7 +48,8 @@
     @PostMapping(value = "/update")
     @ResponseBody
     public Object update(@RequestBody AlarmThreshold threshold) {
-        thresholdService.checkAndUpdate(threshold);
+        threshold.setUpdateTime(TimeUtil.getCurrentTime());
+        thresholdService.save(threshold);
         return ResponseData.success();
     }
 
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
index d6badef..11b724a 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
@@ -3,12 +3,19 @@
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.casic.missiles.modular.system.model.AlarmThreshold;
+import com.casic.missiles.modular.system.model.Task;
+import org.apache.ibatis.annotations.Param;
 
 /**
- * 报警数据信息 Mapper 接口
+ * 报警阈值信息 Mapper 接口
  *
  * @author a203
  */
 public interface AlarmThresholdMapper extends BaseMapper<AlarmThreshold> {
-
+    /**
+     * 根据阈值创建时间排序，查询最新的阈值
+     *
+     * @return {@link AlarmThreshold}
+     */
+    AlarmThreshold selectLastOne();
 }

diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
index 1bb8a74..799141b 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
@@ -9,6 +9,7 @@
 import com.casic.missiles.modular.system.model.AlarmThreshold;
 import com.casic.missiles.modular.system.service.IAlarmService;
 import com.casic.missiles.modular.system.service.IAlarmThresholdService;
+import com.casic.missiles.modular.system.utils.TimeUtil;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
@@ -47,7 +48,8 @@
     @PostMapping(value = "/update")
     @ResponseBody
     public Object update(@RequestBody AlarmThreshold threshold) {
-        thresholdService.checkAndUpdate(threshold);
+        threshold.setUpdateTime(TimeUtil.getCurrentTime());
+        thresholdService.save(threshold);
         return ResponseData.success();
     }
 
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
index d6badef..11b724a 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
@@ -3,12 +3,19 @@
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.casic.missiles.modular.system.model.AlarmThreshold;
+import com.casic.missiles.modular.system.model.Task;
+import org.apache.ibatis.annotations.Param;
 
 /**
- * 报警数据信息 Mapper 接口
+ * 报警阈值信息 Mapper 接口
  *
  * @author a203
  */
 public interface AlarmThresholdMapper extends BaseMapper<AlarmThreshold> {
-
+    /**
+     * 根据阈值创建时间排序，查询最新的阈值
+     *
+     * @return {@link AlarmThreshold}
+     */
+    AlarmThreshold selectLastOne();
 }
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
index 76c6d2b..cab6f35 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
@@ -2,4 +2,24 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.casic.missiles.modular.system.dao.AlarmThresholdMapper">
 
+    <!-- 通用查询结果列 -->
+    <sql id="Base_Column_List">
+        ID AS id,
+        UPDATE_TIME AS updateTime,
+        TYPHOON_DIS AS typhoonDistance,
+        TYPHOON_SPEED AS typhoonSpeed,
+        SHIP_DIS AS shipDistance,
+        ROBOT_BATTERY AS robotBattery,
+        ROBOT_DIS AS robotDistance,
+        SATELLITE_SIGNAL AS satelliteSignal
+    </sql>
+
+    <!--根据任务创建时间排序，查询ID下没有结束时间的最新任务-->
+    <select id="selectLastOne" resultType="com.casic.missiles.modular.system.model.AlarmThreshold">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM bus_alarm_threshold AS bat
+        ORDER BY bat.UPDATE_TIME DESC
+        LIMIT 1
+    </select>
 </mapper>
\ No newline at end of file

diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
index 1bb8a74..799141b 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
@@ -9,6 +9,7 @@
 import com.casic.missiles.modular.system.model.AlarmThreshold;
 import com.casic.missiles.modular.system.service.IAlarmService;
 import com.casic.missiles.modular.system.service.IAlarmThresholdService;
+import com.casic.missiles.modular.system.utils.TimeUtil;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
@@ -47,7 +48,8 @@
     @PostMapping(value = "/update")
     @ResponseBody
     public Object update(@RequestBody AlarmThreshold threshold) {
-        thresholdService.checkAndUpdate(threshold);
+        threshold.setUpdateTime(TimeUtil.getCurrentTime());
+        thresholdService.save(threshold);
         return ResponseData.success();
     }
 
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
index d6badef..11b724a 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
@@ -3,12 +3,19 @@
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.casic.missiles.modular.system.model.AlarmThreshold;
+import com.casic.missiles.modular.system.model.Task;
+import org.apache.ibatis.annotations.Param;
 
 /**
- * 报警数据信息 Mapper 接口
+ * 报警阈值信息 Mapper 接口
  *
  * @author a203
  */
 public interface AlarmThresholdMapper extends BaseMapper<AlarmThreshold> {
-
+    /**
+     * 根据阈值创建时间排序，查询最新的阈值
+     *
+     * @return {@link AlarmThreshold}
+     */
+    AlarmThreshold selectLastOne();
 }
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
index 76c6d2b..cab6f35 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
@@ -2,4 +2,24 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.casic.missiles.modular.system.dao.AlarmThresholdMapper">
 
+    <!-- 通用查询结果列 -->
+    <sql id="Base_Column_List">
+        ID AS id,
+        UPDATE_TIME AS updateTime,
+        TYPHOON_DIS AS typhoonDistance,
+        TYPHOON_SPEED AS typhoonSpeed,
+        SHIP_DIS AS shipDistance,
+        ROBOT_BATTERY AS robotBattery,
+        ROBOT_DIS AS robotDistance,
+        SATELLITE_SIGNAL AS satelliteSignal
+    </sql>
+
+    <!--根据任务创建时间排序，查询ID下没有结束时间的最新任务-->
+    <select id="selectLastOne" resultType="com.casic.missiles.modular.system.model.AlarmThreshold">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM bus_alarm_threshold AS bat
+        ORDER BY bat.UPDATE_TIME DESC
+        LIMIT 1
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
index 9ccfe85..49b7dff 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
@@ -14,11 +14,4 @@
      * @return {@link AlarmThresholdDTO}
      */
     AlarmThresholdDTO recentValue();
-
-    /**
-     * 修改报警阈值
-     *
-     * @param threshold 报警阈值对象
-     */
-    void checkAndUpdate(AlarmThreshold threshold);
 }
\ No newline at end of file

diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
index 1bb8a74..799141b 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
@@ -9,6 +9,7 @@
 import com.casic.missiles.modular.system.model.AlarmThreshold;
 import com.casic.missiles.modular.system.service.IAlarmService;
 import com.casic.missiles.modular.system.service.IAlarmThresholdService;
+import com.casic.missiles.modular.system.utils.TimeUtil;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
@@ -47,7 +48,8 @@
     @PostMapping(value = "/update")
     @ResponseBody
     public Object update(@RequestBody AlarmThreshold threshold) {
-        thresholdService.checkAndUpdate(threshold);
+        threshold.setUpdateTime(TimeUtil.getCurrentTime());
+        thresholdService.save(threshold);
         return ResponseData.success();
     }
 
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
index d6badef..11b724a 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
@@ -3,12 +3,19 @@
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.casic.missiles.modular.system.model.AlarmThreshold;
+import com.casic.missiles.modular.system.model.Task;
+import org.apache.ibatis.annotations.Param;
 
 /**
- * 报警数据信息 Mapper 接口
+ * 报警阈值信息 Mapper 接口
  *
  * @author a203
  */
 public interface AlarmThresholdMapper extends BaseMapper<AlarmThreshold> {
-
+    /**
+     * 根据阈值创建时间排序，查询最新的阈值
+     *
+     * @return {@link AlarmThreshold}
+     */
+    AlarmThreshold selectLastOne();
 }
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
index 76c6d2b..cab6f35 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
@@ -2,4 +2,24 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.casic.missiles.modular.system.dao.AlarmThresholdMapper">
 
+    <!-- 通用查询结果列 -->
+    <sql id="Base_Column_List">
+        ID AS id,
+        UPDATE_TIME AS updateTime,
+        TYPHOON_DIS AS typhoonDistance,
+        TYPHOON_SPEED AS typhoonSpeed,
+        SHIP_DIS AS shipDistance,
+        ROBOT_BATTERY AS robotBattery,
+        ROBOT_DIS AS robotDistance,
+        SATELLITE_SIGNAL AS satelliteSignal
+    </sql>
+
+    <!--根据任务创建时间排序，查询ID下没有结束时间的最新任务-->
+    <select id="selectLastOne" resultType="com.casic.missiles.modular.system.model.AlarmThreshold">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM bus_alarm_threshold AS bat
+        ORDER BY bat.UPDATE_TIME DESC
+        LIMIT 1
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
index 9ccfe85..49b7dff 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
@@ -14,11 +14,4 @@
      * @return {@link AlarmThresholdDTO}
      */
     AlarmThresholdDTO recentValue();
-
-    /**
-     * 修改报警阈值
-     *
-     * @param threshold 报警阈值对象
-     */
-    void checkAndUpdate(AlarmThreshold threshold);
 }
\ No newline at end of file
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java
index 9ea96d1..092ad88 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java
@@ -1,6 +1,5 @@
 package com.casic.missiles.modular.system.service.impl;
 
-import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.casic.missiles.modular.system.dao.AlarmThresholdMapper;
 import com.casic.missiles.modular.system.dto.AlarmThresholdDTO;
@@ -20,17 +19,10 @@
 
     @Override
     public AlarmThresholdDTO recentValue() {
-        AlarmThresholdDTO thresholdDTO = null;
-        for (AlarmThreshold alarm : list()) {
-            thresholdDTO = new AlarmThresholdDTO(alarm);
+        AlarmThreshold threshold = this.baseMapper.selectLastOne();
+        if (threshold == null) {
+            return null;
         }
-        return thresholdDTO;
-    }
-
-    @Override
-    public void checkAndUpdate(AlarmThreshold threshold) {
-        QueryWrapper<AlarmThreshold> query = new QueryWrapper<>();
-        this.baseMapper.delete(query);
-        save(threshold);
+        return new AlarmThresholdDTO(threshold);
     }
 }

diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
index 1bb8a74..799141b 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/controller/AlarmController.java
@@ -9,6 +9,7 @@
 import com.casic.missiles.modular.system.model.AlarmThreshold;
 import com.casic.missiles.modular.system.service.IAlarmService;
 import com.casic.missiles.modular.system.service.IAlarmThresholdService;
+import com.casic.missiles.modular.system.utils.TimeUtil;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.*;
 
@@ -47,7 +48,8 @@
     @PostMapping(value = "/update")
     @ResponseBody
     public Object update(@RequestBody AlarmThreshold threshold) {
-        thresholdService.checkAndUpdate(threshold);
+        threshold.setUpdateTime(TimeUtil.getCurrentTime());
+        thresholdService.save(threshold);
         return ResponseData.success();
     }
 
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
index d6badef..11b724a 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/AlarmThresholdMapper.java
@@ -3,12 +3,19 @@
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.casic.missiles.modular.system.model.AlarmThreshold;
+import com.casic.missiles.modular.system.model.Task;
+import org.apache.ibatis.annotations.Param;
 
 /**
- * 报警数据信息 Mapper 接口
+ * 报警阈值信息 Mapper 接口
  *
  * @author a203
  */
 public interface AlarmThresholdMapper extends BaseMapper<AlarmThreshold> {
-
+    /**
+     * 根据阈值创建时间排序，查询最新的阈值
+     *
+     * @return {@link AlarmThreshold}
+     */
+    AlarmThreshold selectLastOne();
 }
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
index 76c6d2b..cab6f35 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/dao/mapping/AlarmThresholdMapper.xml
@@ -2,4 +2,24 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.casic.missiles.modular.system.dao.AlarmThresholdMapper">
 
+    <!-- 通用查询结果列 -->
+    <sql id="Base_Column_List">
+        ID AS id,
+        UPDATE_TIME AS updateTime,
+        TYPHOON_DIS AS typhoonDistance,
+        TYPHOON_SPEED AS typhoonSpeed,
+        SHIP_DIS AS shipDistance,
+        ROBOT_BATTERY AS robotBattery,
+        ROBOT_DIS AS robotDistance,
+        SATELLITE_SIGNAL AS satelliteSignal
+    </sql>
+
+    <!--根据任务创建时间排序，查询ID下没有结束时间的最新任务-->
+    <select id="selectLastOne" resultType="com.casic.missiles.modular.system.model.AlarmThreshold">
+        SELECT
+        <include refid="Base_Column_List"/>
+        FROM bus_alarm_threshold AS bat
+        ORDER BY bat.UPDATE_TIME DESC
+        LIMIT 1
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
index 9ccfe85..49b7dff 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/IAlarmThresholdService.java
@@ -14,11 +14,4 @@
      * @return {@link AlarmThresholdDTO}
      */
     AlarmThresholdDTO recentValue();
-
-    /**
-     * 修改报警阈值
-     *
-     * @param threshold 报警阈值对象
-     */
-    void checkAndUpdate(AlarmThreshold threshold);
 }
\ No newline at end of file
diff --git a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java
index 9ea96d1..092ad88 100644
--- a/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java
+++ b/casic-alarm/src/main/java/com/casic/missiles/modular/system/service/impl/AlarmThresholdServiceImpl.java
@@ -1,6 +1,5 @@
 package com.casic.missiles.modular.system.service.impl;
 
-import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.casic.missiles.modular.system.dao.AlarmThresholdMapper;
 import com.casic.missiles.modular.system.dto.AlarmThresholdDTO;
@@ -20,17 +19,10 @@
 
     @Override
     public AlarmThresholdDTO recentValue() {
-        AlarmThresholdDTO thresholdDTO = null;
-        for (AlarmThreshold alarm : list()) {
-            thresholdDTO = new AlarmThresholdDTO(alarm);
+        AlarmThreshold threshold = this.baseMapper.selectLastOne();
+        if (threshold == null) {
+            return null;
         }
-        return thresholdDTO;
-    }
-
-    @Override
-    public void checkAndUpdate(AlarmThreshold threshold) {
-        QueryWrapper<AlarmThreshold> query = new QueryWrapper<>();
-        this.baseMapper.delete(query);
-        save(threshold);
+        return new AlarmThresholdDTO(threshold);
     }
 }
diff --git a/casic-server-support/src/main/java/com/casic/missiles/modular/system/model/AlarmThreshold.java b/casic-server-support/src/main/java/com/casic/missiles/modular/system/model/AlarmThreshold.java
index 49b01fd..d43d55d 100644
--- a/casic-server-support/src/main/java/com/casic/missiles/modular/system/model/AlarmThreshold.java
+++ b/casic-server-support/src/main/java/com/casic/missiles/modular/system/model/AlarmThreshold.java
@@ -19,11 +19,15 @@
 
     /**
      * 数据库主键
-     * <p>
-     * type = IdType.AUTO 是数据库自增
      */
-    @TableId(value = "ID", type = IdType.AUTO)
-    private Integer id;
+    @TableId(value = "ID", type = IdType.ASSIGN_ID)
+    private Long id;
+
+    /**
+     * 阈值更新的时间
+     */
+    @TableField("UPDATE_TIME")
+    private String updateTime;
 
     /**
      * 台风与方舱和机器人的距离