diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MesRollStandbyController.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MesRollStandbyController.java
index dd6a75a3..f9a70707 100644
--- a/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MesRollStandbyController.java
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/controller/MesRollStandbyController.java
@@ -104,14 +104,12 @@ public class MesRollStandbyController extends BaseController
     }
 
     /**
-     * 清空指定机架所有备辊，同时回退轧辊状态
+     * 清空指定产线+机架的全部下批轧辊
      * DELETE /mill/standby/clear?lineId=xxx&standNo=1%23
      */
-    @PreAuthorize("@ss.hasPermi('mill:standby:remove')")
-    @Log(title = "下批轧辊（待换上）", businessType = BusinessType.DELETE)
+    @Log(title = "下批轧辊", businessType = BusinessType.DELETE)
     @DeleteMapping("/clear")
-    public AjaxResult clearByStand(@RequestParam Long lineId, @RequestParam String standNo)
-    {
+    public AjaxResult clear(Long lineId, @RequestParam String standNo) {
         return toAjax(mesRollStandbyService.clearByStand(lineId, standNo));
     }
 }
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MesRollStandbyVo.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MesRollStandbyVo.java
index 1cb27879..b65a78fb 100644
--- a/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MesRollStandbyVo.java
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/domain/MesRollStandbyVo.java
@@ -14,10 +14,14 @@ public class MesRollStandbyVo {
     private String rollNo;
     private String rollType;
     private String position;
+    /** 辊位中文标签（上支撑辊/上工作辊/下工作辊/下支撑辊） */
+    private String positionLabel;
     private BigDecimal diameter;
     private BigDecimal roughness;
     private BigDecimal crown;
     private Date readyTime;
+    private String remark;
+    private Date createTime;
 
     public Long getStandbyId() { return standbyId; }
     public void setStandbyId(Long standbyId) { this.standbyId = standbyId; }
@@ -37,6 +41,9 @@ public class MesRollStandbyVo {
     public String getPosition() { return position; }
     public void setPosition(String position) { this.position = position; }
 
+    public String getPositionLabel() { return positionLabel; }
+    public void setPositionLabel(String positionLabel) { this.positionLabel = positionLabel; }
+
     public BigDecimal getDiameter() { return diameter; }
     public void setDiameter(BigDecimal diameter) { this.diameter = diameter; }
 
@@ -48,4 +55,10 @@ public class MesRollStandbyVo {
 
     public Date getReadyTime() { return readyTime; }
     public void setReadyTime(Date readyTime) { this.readyTime = readyTime; }
+
+    public String getRemark() { return remark; }
+    public void setRemark(String remark) { this.remark = remark; }
+
+    public Date getCreateTime() { return createTime; }
+    public void setCreateTime(Date createTime) { this.createTime = createTime; }
 }
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollInfoMapper.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollInfoMapper.java
index 6fb010bf..7ae48585 100644
--- a/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollInfoMapper.java
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollInfoMapper.java
@@ -36,10 +36,9 @@ public interface MesRollInfoMapper {
     int updateCurrentDia(@Param("rollId") Long rollId, @Param("currentDia") BigDecimal currentDia);
 
     /**
-     * 条件更新轧辊状态 — 仅当当前状态为 oldStatus 时才更新为 newStatus
-     * 用于清空备辊时安全回退：避免把已上机的轧辊状态改错
+     * 条件更新：仅当辊当前状态等于 onlyIfStatus 时才更新（用于避免误覆盖已 Online 的辊）
      */
     int updateStatusByRollNoIfStatus(@Param("rollNo") String rollNo,
-                                     @Param("newStatus") String newStatus,
-                                     @Param("oldStatus") String oldStatus);
+                                     @Param("status") String status,
+                                     @Param("onlyIfStatus") String onlyIfStatus);
 }
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollStandbyMapper.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollStandbyMapper.java
index c3c71b9a..4c0a03c6 100644
--- a/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollStandbyMapper.java
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/mapper/MesRollStandbyMapper.java
@@ -2,6 +2,7 @@ package com.ruoyi.mill.mapper;
 
 import java.util.List;
 import com.ruoyi.mill.domain.MesRollStandby;
+import com.ruoyi.mill.domain.MesRollStandbyVo;
 import org.apache.ibatis.annotations.Param;
 
 /**
@@ -67,7 +68,7 @@ public interface MesRollStandbyMapper
      * @param standNo 机架号
      * @return 备辊列表 (VO)
      */
-    public List<MesRollStandby> selectByStand(@Param("lineId") Long lineId, @Param("standNo") String standNo);
+    public List<MesRollStandbyVo> selectByStand(@Param("lineId") Long lineId, @Param("standNo") String standNo);
 
     /**
      * 清空指定机架的所有备辊记录
diff --git a/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MesRollStandbyServiceImpl.java b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MesRollStandbyServiceImpl.java
index 80255429..9398c972 100644
--- a/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MesRollStandbyServiceImpl.java
+++ b/ruoyi-mill/src/main/java/com/ruoyi/mill/service/impl/MesRollStandbyServiceImpl.java
@@ -11,6 +11,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import com.ruoyi.mill.mapper.MesRollStandbyMapper;
 import com.ruoyi.mill.domain.MesRollStandby;
+import com.ruoyi.mill.domain.MesRollStandbyVo;
 import com.ruoyi.mill.service.IMesRollStandbyService;
 import com.ruoyi.common.utils.StringUtils;
 
@@ -113,9 +114,9 @@ public class MesRollStandbyServiceImpl implements IMesRollStandbyService
     @Transactional(rollbackFor = Exception.class)
     public Boolean clearByStand(Long lineId, String standNo) {
         // 先查出所有辊号再清空
-        List<MesRollStandby> list = mesRollStandbyMapper.selectByStand(lineId, standNo);
+        List<MesRollStandbyVo> list = mesRollStandbyMapper.selectByStand(lineId, standNo);
         int rows = mesRollStandbyMapper.clearByStand(lineId, standNo);
-        for (MesRollStandby vo : list) {
+        for (MesRollStandbyVo vo : list) {
             if (StringUtils.isNotBlank(vo.getRollNo())) {
                 // 只有仍处于 Standby 状态时才回退为 Offline（换辊后已变 Online 的不动）
                 rollInfoMapper.updateStatusByRollNoIfStatus(vo.getRollNo(), "Offline", "Standby");
diff --git a/ruoyi-mill/src/main/resources/mapper/mill/MesRollInfoMapper.xml b/ruoyi-mill/src/main/resources/mapper/mill/MesRollInfoMapper.xml
index 1f347813..53c6a26c 100644
--- a/ruoyi-mill/src/main/resources/mapper/mill/MesRollInfoMapper.xml
+++ b/ruoyi-mill/src/main/resources/mapper/mill/MesRollInfoMapper.xml
@@ -171,13 +171,10 @@
         WHERE del_flag = 0 AND roll_id = #{rollId}
     </update>
 
-    <!-- 条件更新轧辊状态 — 仅当当前状态为 oldStatus 时才更新 -->
     <update id="updateStatusByRollNoIfStatus">
         UPDATE mes_roll_info
-        SET status = #{newStatus}, update_time = NOW()
-        WHERE del_flag = 0
-          AND roll_no = #{rollNo}
-          AND status = #{oldStatus}
+        SET status = #{status}, update_time = NOW()
+        WHERE del_flag = 0 AND roll_no = #{rollNo} AND status = #{onlyIfStatus}
     </update>
 
 </mapper>
diff --git a/ruoyi-mill/src/main/resources/mapper/mill/MesRollStandbyMapper.xml b/ruoyi-mill/src/main/resources/mapper/mill/MesRollStandbyMapper.xml
index 091ca1b3..e2dcf88f 100644
--- a/ruoyi-mill/src/main/resources/mapper/mill/MesRollStandbyMapper.xml
+++ b/ruoyi-mill/src/main/resources/mapper/mill/MesRollStandbyMapper.xml
@@ -118,13 +118,33 @@
         </foreach>
     </delete>
 
-    <select id="selectByStand" resultMap="MesRollStandbyResult">
-        <include refid="selectMesRollStandbyVo"/>
-        where line_id = #{lineId} and stand_no = #{standNo}
+    <select id="selectByStand" resultType="com.ruoyi.mill.domain.MesRollStandbyVo">
+        SELECT
+            standby_id, line_id, stand_no, roll_no, roll_type, position,
+            CASE
+                WHEN roll_type = 'BR' AND position = 'UP'   THEN '上支撑辊'
+                WHEN roll_type = 'WR' AND position = 'UP'   THEN '上工作辊'
+                WHEN roll_type = 'WR' AND position = 'DOWN' THEN '下工作辊'
+                WHEN roll_type = 'BR' AND position = 'DOWN' THEN '下支撑辊'
+                ELSE CONCAT(position, roll_type)
+            END AS position_label,
+            diameter, roughness, crown, ready_time, remark, create_time
+        FROM mes_roll_standby
+        WHERE del_flag = 0
+          AND stand_no = #{standNo}
+          <if test="lineId != null">AND line_id = #{lineId}</if>
+        ORDER BY
+            FIELD(roll_type, 'BR', 'WR', 'WR', 'BR'),
+            FIELD(position, 'UP', 'UP', 'DOWN', 'DOWN')
     </select>
 
-    <delete id="clearByStand">
-        delete from mes_roll_standby
-        where line_id = #{lineId} and stand_no = #{standNo}
-    </delete>
+    <!-- 逻辑删除指定产线+机架所有下批轧辊（清空） -->
+    <update id="clearByStand">
+        UPDATE mes_roll_standby
+        SET del_flag = 1
+        WHERE del_flag = 0
+        AND stand_no = #{standNo}
+        <if test="lineId != null">AND line_id = #{lineId}</if>
+    </update>
+
 </mapper>