diff --git a/aucma-base/src/main/resources/mapper/base/BaseOrderInfoMapper.xml b/aucma-base/src/main/resources/mapper/base/BaseOrderInfoMapper.xml
index e883565..229ed4f 100644
--- a/aucma-base/src/main/resources/mapper/base/BaseOrderInfoMapper.xml
+++ b/aucma-base/src/main/resources/mapper/base/BaseOrderInfoMapper.xml
@@ -116,7 +116,8 @@
                 to_date(#{params.endEndTime}, 'yyyy-mm-dd')
             </if>
         </where>
-        order by oi.material_name, order_code desc
+        <!-- 列表页按主键倒序展示，优先查看最新同步/维护的工单 -->
+        order by oi.obj_id desc
     </select>
 
     <select id="selectBaseOrderInfoByObjId" parameterType="Long" resultMap="BaseOrderInfoResult">
@@ -134,7 +135,8 @@
             </if>
             <if test="workCenterCode != null ">and oi.work_center_code = #{workCenterCode}</if>
         </where>
-        order by oi.material_name, order_code desc
+        <!-- 全量工单列表同样按主键倒序，保持后台列表入口展示规则一致 -->
+        order by oi.obj_id desc
     </select>
 
     <select id="selectPdaOrderListByMaterialCodes" resultMap="BaseOrderInfoResult">
diff --git a/aucma-base/src/main/resources/mapper/base/OrderBomInfoMapper.xml b/aucma-base/src/main/resources/mapper/base/OrderBomInfoMapper.xml
index a1b4389..8484d24 100644
--- a/aucma-base/src/main/resources/mapper/base/OrderBomInfoMapper.xml
+++ b/aucma-base/src/main/resources/mapper/base/OrderBomInfoMapper.xml
@@ -76,7 +76,8 @@
             <if test="vbpos != null  and vbpos != ''">and ob.vbpos = #{vbpos}</if>
             <if test="ancestors != null  and ancestors != ''">and ob.ancestors like concat(concat('%', #{ancestors}), '%')</if>
         </where>
-        order by ob.parent_id, ob.sort
+        <!-- 列表页按主键倒序展示，避免新增BOM被父项/排序号分散到旧数据中 -->
+        order by ob.obj_id desc
     </select>
 
     <select id="selectOrderBomInfoByObjId" parameterType="Long" resultMap="OrderBomInfoResult">
diff --git a/aucma-dms/src/main/java/com/aucma/dms/controller/DmsBaseShutReasonController.java b/aucma-dms/src/main/java/com/aucma/dms/controller/DmsBaseShutReasonController.java
index cbcef12..e0bf9ec 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/controller/DmsBaseShutReasonController.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/controller/DmsBaseShutReasonController.java
@@ -107,5 +107,23 @@ public class DmsBaseShutReasonController extends BaseController
         List<DmsBaseShutReason> list = dmsBaseShutReasonService.selectDmsBaseShutReasonList(dmsBaseShutReason);
         return AjaxResult.success(list);
     }
+
+    /**
+     * 查询停机原因树
+     */
+    @GetMapping("/tree")
+    public AjaxResult tree(@RequestParam(value = "deviceId", required = false) Long deviceId)
+    {
+        return success(dmsBaseShutReasonService.selectShutReasonTree(deviceId));
+    }
+
+    /**
+     * 查询推荐停机原因
+     */
+    @GetMapping("/recommend")
+    public AjaxResult recommend(@RequestParam(value = "deviceId", required = false) Long deviceId)
+    {
+        return success(dmsBaseShutReasonService.selectRecommendShutReasonList(deviceId));
+    }
     
 }
diff --git a/aucma-dms/src/main/java/com/aucma/dms/domain/DmsBaseShutReason.java b/aucma-dms/src/main/java/com/aucma/dms/domain/DmsBaseShutReason.java
index b428bbc..5ffe2ac 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/domain/DmsBaseShutReason.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/domain/DmsBaseShutReason.java
@@ -40,6 +40,15 @@ public class DmsBaseShutReason extends DmsBaseEntity
     private String isFlag;
     private String  deviceName;
 
+    /** 近90天当前设备使用次数（非持久化字段） */
+    private Long deviceFreq;
+
+    /** 近90天当前产线使用次数（非持久化字段） */
+    private Long lineFreq;
+
+    /** 近180天全局使用次数（非持久化字段） */
+    private Long globalFreq;
+
     public String getDeviceName() {
         return deviceName;
     }
@@ -103,6 +112,36 @@ public class DmsBaseShutReason extends DmsBaseEntity
         return isFlag;
     }
 
+    public Long getDeviceFreq()
+    {
+        return deviceFreq;
+    }
+
+    public void setDeviceFreq(Long deviceFreq)
+    {
+        this.deviceFreq = deviceFreq;
+    }
+
+    public Long getLineFreq()
+    {
+        return lineFreq;
+    }
+
+    public void setLineFreq(Long lineFreq)
+    {
+        this.lineFreq = lineFreq;
+    }
+
+    public Long getGlobalFreq()
+    {
+        return globalFreq;
+    }
+
+    public void setGlobalFreq(Long globalFreq)
+    {
+        this.globalFreq = globalFreq;
+    }
+
     @Override
     public String toString() {
         return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)
@@ -112,6 +151,9 @@ public class DmsBaseShutReason extends DmsBaseEntity
             .append("shutTypeId", getShutTypeId())
             .append("shutReason", getShutReason())
             .append("isFlag", getIsFlag())
+            .append("deviceFreq", getDeviceFreq())
+            .append("lineFreq", getLineFreq())
+            .append("globalFreq", getGlobalFreq())
             .append("remark", getRemark())
             .append("createBy", getCreateBy())
             .append("createTime", getCreateTime())
diff --git a/aucma-dms/src/main/java/com/aucma/dms/domain/vo/DmsShutReasonRecommendVo.java b/aucma-dms/src/main/java/com/aucma/dms/domain/vo/DmsShutReasonRecommendVo.java
new file mode 100644
index 0000000..ea8309a
--- /dev/null
+++ b/aucma-dms/src/main/java/com/aucma/dms/domain/vo/DmsShutReasonRecommendVo.java
@@ -0,0 +1,32 @@
+package com.aucma.dms.domain.vo;
+
+import com.aucma.dms.domain.DmsBaseEntity;
+import lombok.Data;
+
+/**
+ * 停机原因推荐对象
+ *
+ * @author Codex
+ * @date 2026-04-21
+ */
+@Data
+public class DmsShutReasonRecommendVo extends DmsBaseEntity
+{
+    private static final long serialVersionUID = 1L;
+
+    private Long shutReasonId;
+
+    private String reasonCode;
+
+    private String shutReason;
+
+    private Long shutTypeId;
+
+    private String shutTypeName;
+
+    private Long deviceFreq;
+
+    private Long lineFreq;
+
+    private Long globalFreq;
+}
diff --git a/aucma-dms/src/main/java/com/aucma/dms/domain/vo/DmsShutReasonTreeVo.java b/aucma-dms/src/main/java/com/aucma/dms/domain/vo/DmsShutReasonTreeVo.java
new file mode 100644
index 0000000..09fb9af
--- /dev/null
+++ b/aucma-dms/src/main/java/com/aucma/dms/domain/vo/DmsShutReasonTreeVo.java
@@ -0,0 +1,36 @@
+package com.aucma.dms.domain.vo;
+
+import com.aucma.dms.domain.DmsBaseEntity;
+import com.aucma.dms.domain.DmsBaseShutReason;
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * 停机原因树节点对象
+ *
+ * @author Codex
+ * @date 2026-04-21
+ */
+@Data
+public class DmsShutReasonTreeVo extends DmsBaseEntity
+{
+    private static final long serialVersionUID = 1L;
+
+    private Long shutTypeId;
+
+    private String typeCode;
+
+    private String shutTypeName;
+
+    private Integer reasonCount;
+
+    private Long deviceFreq;
+
+    private Long lineFreq;
+
+    private Long globalFreq;
+
+    private List<DmsBaseShutReason> reasonList;
+
+}
diff --git a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBaseShutReasonMapper.java b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBaseShutReasonMapper.java
index 4c9fc71..c855511 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBaseShutReasonMapper.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsBaseShutReasonMapper.java
@@ -1,6 +1,8 @@
 package com.aucma.dms.mapper;
 
 import com.aucma.dms.domain.DmsBaseShutReason;
+import com.aucma.dms.domain.vo.DmsShutReasonRecommendVo;
+import org.apache.ibatis.annotations.Param;
 
 import java.util.List;
 
@@ -28,6 +30,22 @@ public interface DmsBaseShutReasonMapper
      */
     public List<DmsBaseShutReason> selectDmsBaseShutReasonList(DmsBaseShutReason dmsBaseShutReason);
 
+    /**
+     * 查询当前场景可用停机原因
+     *
+     * @param deviceId 设备ID
+     * @return 停机原因集合
+     */
+    public List<DmsBaseShutReason> selectAvailableShutReasonList(@Param("deviceId") Long deviceId);
+
+    /**
+     * 查询推荐停机原因
+     *
+     * @param deviceId 设备ID
+     * @return 推荐停机原因集合
+     */
+    public List<DmsShutReasonRecommendVo> selectRecommendReasonList(@Param("deviceId") Long deviceId);
+
     /**
      * 新增停机原因信息
      * 
diff --git a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsRecordShutDownMapper.java b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsRecordShutDownMapper.java
index ae41756..3186437 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsRecordShutDownMapper.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/mapper/DmsRecordShutDownMapper.java
@@ -78,7 +78,9 @@ public interface DmsRecordShutDownMapper
      * @return 结果
      */
     public int batchUpdateShutReason(@Param("recordShutDownIds") Long[] recordShutDownIds, 
-                                      @Param("shutReasonId") Long shutReasonId, 
-                                      @Param("updateBy") Long updateBy, 
+                                      @Param("shutReasonId") Long shutReasonId,
+                                      @Param("shutTypeId") Long shutTypeId,
+                                      @Param("shutReason") String shutReason,
+                                      @Param("updateBy") Long updateBy,
                                       @Param("updateTime") java.util.Date updateTime);
 }
diff --git a/aucma-dms/src/main/java/com/aucma/dms/service/IDmsBaseShutReasonService.java b/aucma-dms/src/main/java/com/aucma/dms/service/IDmsBaseShutReasonService.java
index 8f897cd..a64ccfd 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/service/IDmsBaseShutReasonService.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/service/IDmsBaseShutReasonService.java
@@ -1,6 +1,8 @@
 package com.aucma.dms.service;
 
 import com.aucma.dms.domain.DmsBaseShutReason;
+import com.aucma.dms.domain.vo.DmsShutReasonRecommendVo;
+import com.aucma.dms.domain.vo.DmsShutReasonTreeVo;
 
 import java.util.List;
 
@@ -28,6 +30,22 @@ public interface IDmsBaseShutReasonService
      */
     public List<DmsBaseShutReason> selectDmsBaseShutReasonList(DmsBaseShutReason dmsBaseShutReason);
 
+    /**
+     * 查询停机原因树
+     *
+     * @param deviceId 设备ID
+     * @return 停机原因树
+     */
+    public List<DmsShutReasonTreeVo> selectShutReasonTree(Long deviceId);
+
+    /**
+     * 查询停机原因推荐列表
+     *
+     * @param deviceId 设备ID
+     * @return 推荐列表
+     */
+    public List<DmsShutReasonRecommendVo> selectRecommendShutReasonList(Long deviceId);
+
     /**
      * 新增停机原因信息
      * 
diff --git a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBaseShutReasonServiceImpl.java b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBaseShutReasonServiceImpl.java
index 79231e0..54fc4e2 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBaseShutReasonServiceImpl.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsBaseShutReasonServiceImpl.java
@@ -13,12 +13,22 @@ import com.aucma.common.exception.ServiceException;
 import com.aucma.common.utils.DateUtils;
 import com.aucma.common.utils.SecurityUtils;
 import com.aucma.dms.domain.DmsBaseShutReason;
+import com.aucma.dms.domain.DmsBaseShutType;
+import com.aucma.dms.domain.vo.DmsShutReasonRecommendVo;
+import com.aucma.dms.domain.vo.DmsShutReasonTreeVo;
 import com.aucma.dms.mapper.DmsBaseShutReasonMapper;
 import com.aucma.dms.service.IDmsBaseShutReasonService;
+import com.aucma.dms.service.IDmsBaseShutTypeService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.springframework.util.CollectionUtils;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
 
 /**
  * 停机原因信息Service业务层处理
@@ -32,6 +42,9 @@ public class DmsBaseShutReasonServiceImpl implements IDmsBaseShutReasonService
     @Autowired
     private DmsBaseShutReasonMapper dmsBaseShutReasonMapper;
 
+    @Autowired
+    private IDmsBaseShutTypeService dmsBaseShutTypeService;
+
     /**
      * 查询停机原因信息
      *
@@ -56,6 +69,166 @@ public class DmsBaseShutReasonServiceImpl implements IDmsBaseShutReasonService
         return dmsBaseShutReasonMapper.selectDmsBaseShutReasonList(dmsBaseShutReason);
     }
 
+    /**
+     * 查询停机原因树
+     *
+     * @param deviceId 设备ID
+     * @return 停机原因树
+     */
+    @Override
+    public List<DmsShutReasonTreeVo> selectShutReasonTree(Long deviceId)
+    {
+        DmsBaseShutType typeQuery = new DmsBaseShutType();
+        typeQuery.setIsFlag("1");
+        List<DmsBaseShutType> typeList = dmsBaseShutTypeService.selectDmsBaseShutTypeList(typeQuery);
+        List<DmsBaseShutReason> reasonList = dmsBaseShutReasonMapper.selectAvailableShutReasonList(deviceId);
+        if (CollectionUtils.isEmpty(typeList) || CollectionUtils.isEmpty(reasonList))
+        {
+            return Collections.emptyList();
+        }
+
+        Map<Long, List<DmsBaseShutReason>> reasonMap = reasonList.stream()
+                .collect(Collectors.groupingBy(DmsBaseShutReason::getShutTypeId, LinkedHashMap::new, Collectors.toList()));
+
+        List<DmsShutReasonTreeVo> treeList = new ArrayList<>();
+        boolean deviceScope = deviceId != null;
+        for (DmsBaseShutType type : typeList)
+        {
+            List<DmsBaseShutReason> currentReasonList = reasonMap.get(type.getShutTypeId());
+            if (CollectionUtils.isEmpty(currentReasonList))
+            {
+                continue;
+            }
+            currentReasonList = new ArrayList<>(currentReasonList);
+            // 为什么这样做：同一个大类下优先展示现场更常选择的小类，减少班组维护停机原因时的查找成本。
+            currentReasonList.sort((left, right) -> compareReasonByFrequency(left, right, deviceScope));
+            DmsShutReasonTreeVo treeVo = new DmsShutReasonTreeVo();
+            treeVo.setShutTypeId(type.getShutTypeId());
+            treeVo.setTypeCode(type.getTypeCode());
+            treeVo.setShutTypeName(type.getShutTypeName());
+            treeVo.setReasonCount(currentReasonList.size());
+            treeVo.setDeviceFreq(sumDeviceFreq(currentReasonList));
+            treeVo.setLineFreq(sumLineFreq(currentReasonList));
+            treeVo.setGlobalFreq(sumGlobalFreq(currentReasonList));
+            treeVo.setReasonList(currentReasonList);
+            treeList.add(treeVo);
+        }
+        // 为什么这样做：大类按其下原因的频次汇总排序，高频问题域会自然排在树的前面。
+        treeList.sort((left, right) -> compareTypeByFrequency(left, right, deviceScope));
+        return treeList;
+    }
+
+    private int compareReasonByFrequency(DmsBaseShutReason left, DmsBaseShutReason right, boolean deviceScope)
+    {
+        int result;
+        if (deviceScope)
+        {
+            result = compareFrequencyDesc(left.getDeviceFreq(), right.getDeviceFreq());
+            if (result != 0)
+            {
+                return result;
+            }
+            result = compareFrequencyDesc(left.getLineFreq(), right.getLineFreq());
+            if (result != 0)
+            {
+                return result;
+            }
+        }
+        result = compareFrequencyDesc(left.getGlobalFreq(), right.getGlobalFreq());
+        if (result != 0)
+        {
+            return result;
+        }
+        result = compareStringAsc(left.getReasonCode(), right.getReasonCode());
+        if (result != 0)
+        {
+            return result;
+        }
+        return compareLongAsc(left.getShutReasonId(), right.getShutReasonId());
+    }
+
+    private int compareTypeByFrequency(DmsShutReasonTreeVo left, DmsShutReasonTreeVo right, boolean deviceScope)
+    {
+        int result;
+        if (deviceScope)
+        {
+            result = compareFrequencyDesc(left.getDeviceFreq(), right.getDeviceFreq());
+            if (result != 0)
+            {
+                return result;
+            }
+            result = compareFrequencyDesc(left.getLineFreq(), right.getLineFreq());
+            if (result != 0)
+            {
+                return result;
+            }
+        }
+        result = compareFrequencyDesc(left.getGlobalFreq(), right.getGlobalFreq());
+        if (result != 0)
+        {
+            return result;
+        }
+        result = compareStringAsc(left.getTypeCode(), right.getTypeCode());
+        if (result != 0)
+        {
+            return result;
+        }
+        return compareLongAsc(left.getShutTypeId(), right.getShutTypeId());
+    }
+
+    private int compareFrequencyDesc(Long left, Long right)
+    {
+        return Long.compare(nullToZero(right), nullToZero(left));
+    }
+
+    private int compareStringAsc(String left, String right)
+    {
+        String leftValue = left == null ? "" : left;
+        String rightValue = right == null ? "" : right;
+        return leftValue.compareTo(rightValue);
+    }
+
+    private int compareLongAsc(Long left, Long right)
+    {
+        return Long.compare(nullToZero(left), nullToZero(right));
+    }
+
+    private Long sumDeviceFreq(List<DmsBaseShutReason> reasonList)
+    {
+        return reasonList.stream().mapToLong(reason -> nullToZero(reason.getDeviceFreq())).sum();
+    }
+
+    private Long sumLineFreq(List<DmsBaseShutReason> reasonList)
+    {
+        return reasonList.stream().mapToLong(reason -> nullToZero(reason.getLineFreq())).sum();
+    }
+
+    private Long sumGlobalFreq(List<DmsBaseShutReason> reasonList)
+    {
+        return reasonList.stream().mapToLong(reason -> nullToZero(reason.getGlobalFreq())).sum();
+    }
+
+    private long nullToZero(Long value)
+    {
+        return value == null ? 0L : value;
+    }
+
+    /**
+     * 查询推荐停机原因
+     *
+     * @param deviceId 设备ID
+     * @return 推荐列表
+     */
+    @Override
+    public List<DmsShutReasonRecommendVo> selectRecommendShutReasonList(Long deviceId)
+    {
+        if (deviceId == null)
+        {
+            return Collections.emptyList();
+        }
+        return dmsBaseShutReasonMapper.selectRecommendReasonList(deviceId);
+    }
+
     /**
      * 新增停机原因信息
      *
diff --git a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsRecordShutDownServiceImpl.java b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsRecordShutDownServiceImpl.java
index 2704d27..214e8a4 100644
--- a/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsRecordShutDownServiceImpl.java
+++ b/aucma-dms/src/main/java/com/aucma/dms/service/impl/DmsRecordShutDownServiceImpl.java
@@ -2,10 +2,13 @@ package com.aucma.dms.service.impl;
 
 
 
+import com.aucma.common.exception.ServiceException;
 import com.aucma.common.utils.DateUtils;
 import com.aucma.common.utils.SecurityUtils;
+import com.aucma.dms.domain.DmsBaseShutReason;
 import com.aucma.dms.domain.DmsRecordShutDown;
 import com.aucma.dms.mapper.DmsRecordShutDownMapper;
+import com.aucma.dms.service.IDmsBaseShutReasonService;
 import com.aucma.dms.service.IDmsRecordShutDownService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -25,6 +28,9 @@ public class DmsRecordShutDownServiceImpl implements IDmsRecordShutDownService{
     @Autowired
     private DmsRecordShutDownMapper dmsRecordShutDownMapper;
 
+    @Autowired
+    private IDmsBaseShutReasonService dmsBaseShutReasonService;
+
     /**
      * 查询停机记录
      *
@@ -58,6 +64,7 @@ public class DmsRecordShutDownServiceImpl implements IDmsRecordShutDownService{
     @Override
     public int insertDmsRecordShutDown(DmsRecordShutDown dmsRecordShutDown)
     {
+        fillShutReasonFields(dmsRecordShutDown);
         dmsRecordShutDown.setCreateBy(SecurityUtils.getLoginUser()==null ? SecurityUtils.getUserId() :SecurityUtils.getLoginUser().getUser().getUserId());
         dmsRecordShutDown.setCreateTime(DateUtils.getNowDate());
         return dmsRecordShutDownMapper.insertDmsRecordShutDown(dmsRecordShutDown);
@@ -72,6 +79,7 @@ public class DmsRecordShutDownServiceImpl implements IDmsRecordShutDownService{
     @Override
     public int updateDmsRecordShutDown(DmsRecordShutDown dmsRecordShutDown)
     {
+        fillShutReasonFields(dmsRecordShutDown);
         dmsRecordShutDown.setUpdateBy(SecurityUtils.getLoginUser()==null ? SecurityUtils.getUserId() :SecurityUtils.getLoginUser().getUser().getUserId());
         dmsRecordShutDown.setUpdateTime(DateUtils.getNowDate());
         return dmsRecordShutDownMapper.updateDmsRecordShutDown(dmsRecordShutDown);
@@ -129,10 +137,37 @@ public class DmsRecordShutDownServiceImpl implements IDmsRecordShutDownService{
         }
         if (shutReasonId == null)
         {
-            throw new RuntimeException("停机原因不能为空");
+            throw new ServiceException("停机原因不能为空");
         }
-        
+
+        DmsBaseShutReason shutReason = dmsBaseShutReasonService.selectDmsBaseShutReasonByShutReasonId(shutReasonId);
+        if (shutReason == null)
+        {
+            throw new ServiceException("停机原因不存在");
+        }
+
         Long updateBy = SecurityUtils.getLoginUser() == null ? SecurityUtils.getUserId() : SecurityUtils.getLoginUser().getUser().getUserId();
-        return dmsRecordShutDownMapper.batchUpdateShutReason(recordShutDownIds, shutReasonId, updateBy, DateUtils.getNowDate());
+        return dmsRecordShutDownMapper.batchUpdateShutReason(recordShutDownIds, shutReasonId,
+                shutReason.getShutTypeId(), shutReason.getShutReason(), updateBy, DateUtils.getNowDate());
+    }
+
+    /**
+     * 为什么这样做：停机记录落库时必须把原因ID、类型ID和原因名称同时冻结，
+     * 否则批量维护、PDA 完结和网页编辑会持续积累统计脏数据。
+     */
+    private void fillShutReasonFields(DmsRecordShutDown dmsRecordShutDown)
+    {
+        if (dmsRecordShutDown.getShutReasonId() == null)
+        {
+            return;
+        }
+        DmsBaseShutReason shutReason = dmsBaseShutReasonService
+                .selectDmsBaseShutReasonByShutReasonId(dmsRecordShutDown.getShutReasonId());
+        if (shutReason == null)
+        {
+            throw new ServiceException("停机原因不存在");
+        }
+        dmsRecordShutDown.setShutType(shutReason.getShutTypeId());
+        dmsRecordShutDown.setShutReason(shutReason.getShutReason());
     }
 }
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsBaseShutReasonMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsBaseShutReasonMapper.xml
index 6336185..7f15d3b 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsBaseShutReasonMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsBaseShutReasonMapper.xml
@@ -11,6 +11,9 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="shutTypeId"    column="shut_type_id"    />
         <result property="shutReason"    column="shut_reason"    />
         <result property="isFlag"    column="is_flag"    />
+        <result property="deviceFreq"    column="device_freq"    />
+        <result property="lineFreq"    column="line_freq"    />
+        <result property="globalFreq"    column="global_freq"    />
         <result property="remark"    column="remark"    />
         <result property="createBy"    column="create_by"    />
         <result property="createTime"    column="create_time"    />
@@ -23,9 +26,75 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     </sql>
 
     <select id="selectDmsBaseShutReasonList" parameterType="DmsBaseShutReason" resultMap="DmsBaseShutReasonResult">
-        select a.shut_reason_id, a.reason_code, a.device_id, a.shut_type_id, a.shut_reason, a.is_flag, a.remark, a.create_by, a.create_time, a.update_by, a.update_time
+        select a.shut_reason_id,
+               a.reason_code,
+               a.device_id,
+               a.shut_type_id,
+               a.shut_reason,
+               a.is_flag,
+               nvl(df.freq, 0) as device_freq,
+               nvl(lf.freq, 0) as line_freq,
+               nvl(gf.freq, 0) as global_freq,
+               a.remark,
+               a.create_by,
+               a.create_time,
+               a.update_by,
+               a.update_time
         from dms_base_shut_reason a
         left join base_deviceledger b on a.device_id = b.OBJ_ID
+        left join (
+            <choose>
+                <when test="deviceId != null">
+                    select r.shut_reason_id,
+                           count(1) as freq
+                    from dms_record_shut_down r
+                    where r.machine_id = #{deviceId}
+                      and r.shut_begin_time &gt;= sysdate - 90
+                      and r.shut_reason_id is not null
+                      and r.active_flag = 1
+                    group by r.shut_reason_id
+                </when>
+                <otherwise>
+                    select cast(null as number) as shut_reason_id,
+                           0 as freq
+                    from dual
+                    where 1 = 0
+                </otherwise>
+            </choose>
+        ) df on df.shut_reason_id = a.shut_reason_id
+        left join (
+            <choose>
+                <when test="deviceId != null">
+                    select r.shut_reason_id,
+                           count(1) as freq
+                    from dms_record_shut_down r
+                    join base_deviceledger d
+                      on d.obj_id = r.machine_id
+                    join base_deviceledger current_device
+                      on current_device.obj_id = #{deviceId}
+                    where d.product_line_code = current_device.product_line_code
+                      and r.shut_begin_time &gt;= sysdate - 90
+                      and r.shut_reason_id is not null
+                      and r.active_flag = 1
+                    group by r.shut_reason_id
+                </when>
+                <otherwise>
+                    select cast(null as number) as shut_reason_id,
+                           0 as freq
+                    from dual
+                    where 1 = 0
+                </otherwise>
+            </choose>
+        ) lf on lf.shut_reason_id = a.shut_reason_id
+        left join (
+            select r.shut_reason_id,
+                   count(1) as freq
+            from dms_record_shut_down r
+            where r.shut_begin_time &gt;= sysdate - 180
+              and r.shut_reason_id is not null
+              and r.active_flag = 1
+            group by r.shut_reason_id
+        ) gf on gf.shut_reason_id = a.shut_reason_id
         <where>
             <if test="reasonCode != null  and reasonCode != ''"> and a.reason_code = #{reasonCode}</if>
             <if test="deviceId != null "> and a.device_id = #{deviceId}</if>
@@ -34,6 +103,170 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="shutReason != null  and shutReason != ''"> and a.shut_reason = #{shutReason}</if>
             <if test="isFlag != null  and isFlag != ''"> and a.is_flag = #{isFlag}</if>
         </where>
+        <!-- 为什么这样做：停机原因维护和导出都优先呈现高频项，现场录入时可以更快定位真实高发原因。 -->
+        order by
+        <choose>
+            <when test="deviceId != null">
+                nvl(df.freq, 0) desc,
+                nvl(lf.freq, 0) desc,
+                nvl(gf.freq, 0) desc,
+            </when>
+            <otherwise>
+                nvl(gf.freq, 0) desc,
+            </otherwise>
+        </choose>
+        a.reason_code,
+        a.shut_reason_id
+    </select>
+
+    <select id="selectAvailableShutReasonList" resultMap="DmsBaseShutReasonResult">
+        select a.shut_reason_id,
+               a.reason_code,
+               a.device_id,
+               a.shut_type_id,
+               a.shut_reason,
+               a.is_flag,
+               nvl(df.freq, 0) as device_freq,
+               nvl(lf.freq, 0) as line_freq,
+               nvl(gf.freq, 0) as global_freq,
+               a.remark,
+               a.create_by,
+               a.create_time,
+               a.update_by,
+               a.update_time
+        from dms_base_shut_reason a
+        left join (
+            <choose>
+                <when test="deviceId != null">
+                    select r.shut_reason_id,
+                           count(1) as freq
+                    from dms_record_shut_down r
+                    where r.machine_id = #{deviceId}
+                      and r.shut_begin_time &gt;= sysdate - 90
+                      and r.shut_reason_id is not null
+                      and r.active_flag = 1
+                    group by r.shut_reason_id
+                </when>
+                <otherwise>
+                    select cast(null as number) as shut_reason_id,
+                           0 as freq
+                    from dual
+                    where 1 = 0
+                </otherwise>
+            </choose>
+        ) df on df.shut_reason_id = a.shut_reason_id
+        left join (
+            <choose>
+                <when test="deviceId != null">
+                    select r.shut_reason_id,
+                           count(1) as freq
+                    from dms_record_shut_down r
+                    join base_deviceledger d
+                      on d.obj_id = r.machine_id
+                    join base_deviceledger current_device
+                      on current_device.obj_id = #{deviceId}
+                    where d.product_line_code = current_device.product_line_code
+                      and r.shut_begin_time &gt;= sysdate - 90
+                      and r.shut_reason_id is not null
+                      and r.active_flag = 1
+                    group by r.shut_reason_id
+                </when>
+                <otherwise>
+                    select cast(null as number) as shut_reason_id,
+                           0 as freq
+                    from dual
+                    where 1 = 0
+                </otherwise>
+            </choose>
+        ) lf on lf.shut_reason_id = a.shut_reason_id
+        left join (
+            select r.shut_reason_id,
+                   count(1) as freq
+            from dms_record_shut_down r
+            where r.shut_begin_time &gt;= sysdate - 180
+              and r.shut_reason_id is not null
+              and r.active_flag = 1
+            group by r.shut_reason_id
+        ) gf on gf.shut_reason_id = a.shut_reason_id
+        where a.is_flag = '1'
+        <if test="deviceId != null">
+            and (a.device_id is null or a.device_id = #{deviceId})
+        </if>
+        order by
+        <choose>
+            <when test="deviceId != null">
+                nvl(df.freq, 0) desc,
+                nvl(lf.freq, 0) desc,
+                nvl(gf.freq, 0) desc,
+            </when>
+            <otherwise>
+                nvl(gf.freq, 0) desc,
+            </otherwise>
+        </choose>
+        a.shut_type_id,
+        a.reason_code,
+        a.shut_reason_id
+    </select>
+
+    <select id="selectRecommendReasonList" resultType="com.aucma.dms.domain.vo.DmsShutReasonRecommendVo">
+        with device_freq as (
+            select r.shut_reason_id,
+                   count(1) as freq
+            from dms_record_shut_down r
+            where r.machine_id = #{deviceId}
+              and r.shut_begin_time >= sysdate - 90
+              and r.shut_reason_id is not null
+              and r.active_flag = 1
+            group by r.shut_reason_id
+        ),
+        line_freq as (
+            select r.shut_reason_id,
+                   count(1) as freq
+            from dms_record_shut_down r
+            join base_deviceledger d
+              on d.obj_id = r.machine_id
+            join base_deviceledger current_device
+              on current_device.obj_id = #{deviceId}
+            where d.product_line_code = current_device.product_line_code
+              and r.shut_begin_time >= sysdate - 90
+              and r.shut_reason_id is not null
+              and r.active_flag = 1
+            group by r.shut_reason_id
+        ),
+        global_freq as (
+            select r.shut_reason_id,
+                   count(1) as freq
+            from dms_record_shut_down r
+            where r.shut_begin_time >= sysdate - 180
+              and r.shut_reason_id is not null
+              and r.active_flag = 1
+            group by r.shut_reason_id
+        )
+        select sr.shut_reason_id as shutReasonId,
+               sr.reason_code as reasonCode,
+               sr.shut_reason as shutReason,
+               sr.shut_type_id as shutTypeId,
+               st.shut_type_name as shutTypeName,
+               nvl(df.freq, 0) as deviceFreq,
+               nvl(lf.freq, 0) as lineFreq,
+               nvl(gf.freq, 0) as globalFreq
+        from dms_base_shut_reason sr
+        join dms_base_shut_type st
+          on st.shut_type_id = sr.shut_type_id
+         and st.is_flag = '1'
+        left join device_freq df
+          on df.shut_reason_id = sr.shut_reason_id
+        left join line_freq lf
+          on lf.shut_reason_id = sr.shut_reason_id
+        left join global_freq gf
+          on gf.shut_reason_id = sr.shut_reason_id
+        where sr.is_flag = '1'
+          and (sr.device_id is null or sr.device_id = #{deviceId})
+        order by nvl(df.freq, 0) desc,
+                 nvl(lf.freq, 0) desc,
+                 nvl(gf.freq, 0) desc,
+                 sr.reason_code,
+                 sr.shut_reason_id
     </select>
 
     <select id="selectDmsBaseShutReasonByShutReasonId" parameterType="Long" resultMap="DmsBaseShutReasonResult">
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsBillsFaultInstanceMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsBillsFaultInstanceMapper.xml
index a7e9a14..719ad3f 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsBillsFaultInstanceMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsBillsFaultInstanceMapper.xml
@@ -114,7 +114,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="deviceId != null  and deviceId != ''"> and device_id = #{deviceId}</if>
             <if test="deviceCode != null  and deviceCode != ''"> and device_id in (select OBJ_ID from base_deviceledger where device_code = #{deviceCode})</if>
         </where>
-        order by create_time desc
+        <!-- 故障工单列表按主键倒序，优先展示最新报修实例 -->
+        order by repair_instance_id desc
     </select>
 
     <select id="selectDmsBillsFaultInstanceByRepairInstanceId" parameterType="Long" resultMap="DmsBillsFaultInstanceResult">
@@ -257,6 +258,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="isFlag != null  and isFlag != ''"> and is_flag = #{isFlag}</if>
             <if test="deviceId != null  and deviceId != ''"> and device_id = #{deviceId}</if>
         </where>
+        <!-- 关联设备的故障工单列表按主键倒序，保持列表入口排序一致 -->
         order by dbfi.repair_instance_id desc
     </select>
 
@@ -370,7 +372,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="isFlag != null  and isFlag != ''"> and is_flag = #{isFlag}</if>
             <if test="deviceId != null  and deviceId != ''"> and device_id = #{deviceId}</if>
         </where>
-        order by create_time desc
+        <!-- 已完成故障工单列表按主键倒序，避免相同创建时间下分页顺序不稳定 -->
+        order by repair_instance_id desc
     </select>
     <select id="getDmsPartsList" resultType="com.aucma.dms.domain.DmsFaultCompentsParts"
             parameterType="java.lang.Long">
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsBillsInspectInstanceMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsBillsInspectInstanceMapper.xml
index c279eae..05ca235 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsBillsInspectInstanceMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsBillsInspectInstanceMapper.xml
@@ -67,7 +67,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="inspectStatus != null  and inspectStatus != ''"> and a.inspect_status = #{inspectStatus}</if>
             <if test="isFlag != null  and isFlag != ''"> and a.is_flag = #{isFlag}</if>
         </where>
-        order by a.create_time desc
+        <!-- 点巡检工单列表按主键倒序，优先展示最新生成的点巡检实例 -->
+        order by a.inspect_instance_id desc
     </select>
     <select id="selectPoint" parameterType="DmsBillsInspectInstance" resultMap="DmsBillsInspectInstanceResult">
         <include refid="selectDmsBillsInspectInstanceVo"/>
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
index fc439d3..4de90de 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsBillsMaintInstanceMapper.xml
@@ -71,7 +71,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
                 )
             </if>
         </where>
-        order by create_time desc
+        <!-- 保养工单列表按主键倒序，优先展示最新生成的保养实例 -->
+        order by a.maint_instance_id desc
     </select>
 
     <select id="selectDmsBillsMaintInstanceByMaintInstanceId" parameterType="Long" resultMap="DmsBillsMaintInstanceResult">
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsDispatchPlanMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsDispatchPlanMapper.xml
index 11591e9..73f5803 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsDispatchPlanMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsDispatchPlanMapper.xml
@@ -74,7 +74,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             </if>
             and is_flag = '1'
         </where>
-        order by create_time desc
+        <!-- 派工计划列表按主键倒序，优先展示最新生成的派工计划 -->
+        order by plan_id desc
     </select>
     
     <select id="selectDmsDispatchPlanByPlanId" parameterType="Long" resultMap="DmsDispatchPlanResult">
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsRecordShutDownMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsRecordShutDownMapper.xml
index 424640e..c63f701 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsRecordShutDownMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsRecordShutDownMapper.xml
@@ -67,6 +67,8 @@
             <if test="deviceCode != null and deviceCode != ''">and d.device_code = #{deviceCode}</if>
             <if test="deviceName != null and deviceName != ''">and d.device_name like concat(concat('%', #{deviceName}), '%')</if>
         </where>
+        <!-- 停机记录后台列表按主键倒序，确保最新登记的数据优先展示且分页顺序稳定 -->
+        order by r.record_shut_down_id desc
     </select>
 
     <select id="selectDmsRecordShutDownByRecordShutDownId" parameterType="Long" resultMap="DmsRecordShutDownResult">
@@ -145,6 +147,8 @@
     <update id="batchUpdateShutReason">
         update dms_record_shut_down
         set shut_reason_id = #{shutReasonId},
+            shut_type_id = #{shutTypeId},
+            shut_reason = #{shutReason},
             update_by = #{updateBy},
             update_time = #{updateTime}
         where record_shut_down_id in
diff --git a/aucma-dms/src/main/resources/mapper/dms/DmsRepairRecordMapper.xml b/aucma-dms/src/main/resources/mapper/dms/DmsRepairRecordMapper.xml
index 2040176..f33b4ba 100644
--- a/aucma-dms/src/main/resources/mapper/dms/DmsRepairRecordMapper.xml
+++ b/aucma-dms/src/main/resources/mapper/dms/DmsRepairRecordMapper.xml
@@ -89,7 +89,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             </if>
             and is_flag = '1'
         </where>
-        order by create_time desc
+        <!-- 维修记录列表按主键倒序，避免相同创建时间下分页顺序不稳定 -->
+        order by record_id desc
     </select>
     
     <select id="selectDmsRepairRecordByRecordId" parameterType="Long" resultMap="DmsRepairRecordResult">
diff --git a/aucma-production/src/main/resources/mapper/production/AndonEventAssignmentMapper.xml b/aucma-production/src/main/resources/mapper/production/AndonEventAssignmentMapper.xml
index 83a1368..747bb5e 100644
--- a/aucma-production/src/main/resources/mapper/production/AndonEventAssignmentMapper.xml
+++ b/aucma-production/src/main/resources/mapper/production/AndonEventAssignmentMapper.xml
@@ -41,6 +41,8 @@
                         <if test="status != null  and status != ''"> and status = #{status}</if>
                         <if test="isFlag != null  and isFlag != ''"> and is_flag = #{isFlag}</if>
         </where>
+        <!-- 分派记录列表按主键倒序，优先展示最新分派动作 -->
+        order by assignment_id desc
     </select>
 
     <select id="selectAndonEventAssignmentByAssignmentId" parameterType="Long" resultMap="AndonEventAssignmentResult">
@@ -123,4 +125,4 @@
             #{assignmentId}
         </foreach>
     </delete>
-</mapper>
\ No newline at end of file
+</mapper>
diff --git a/aucma-production/src/main/resources/mapper/production/AndonEventMapper.xml b/aucma-production/src/main/resources/mapper/production/AndonEventMapper.xml
index eb7780c..0c07e6a 100644
--- a/aucma-production/src/main/resources/mapper/production/AndonEventMapper.xml
+++ b/aucma-production/src/main/resources/mapper/production/AndonEventMapper.xml
@@ -71,6 +71,8 @@
                         <if test="resolveDeadline != null "> and resolve_deadline = #{resolveDeadline}</if>
                         <if test="isFlag != null  and isFlag != ''"> and is_flag = #{isFlag}</if>
         </where>
+        <!-- 安灯事件列表按事件主键倒序，便于优先处理最新呼叫 -->
+        order by event_id desc
     </select>
 
     <select id="selectAndonEventByEventId" parameterType="Long" resultMap="AndonEventResult">
@@ -198,4 +200,4 @@
             #{eventId}
         </foreach>
     </delete>
-</mapper>
\ No newline at end of file
+</mapper>