diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/controller/RfidDashboardController.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/controller/RfidDashboardController.java
index 4e80bd4..6af08cd 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/controller/RfidDashboardController.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/controller/RfidDashboardController.java
@@ -1,12 +1,9 @@
 package org.dromara.rfid.controller;
 
-import cn.dev33.satoken.annotation.SaCheckPermission;
-import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import lombok.RequiredArgsConstructor;
 import org.dromara.common.core.domain.R;
-import org.dromara.rfid.domain.RfidDevice;
 import org.dromara.rfid.domain.vo.RfidDashboardStatsVo;
-import org.dromara.rfid.service.IRfidDeviceService;
+import org.dromara.rfid.mapper.RfidDeviceMapper;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -24,42 +21,14 @@ import org.springframework.web.bind.annotation.RestController;
 @RequestMapping("/rfid/dashboard")
 public class RfidDashboardController {
 
-    private final IRfidDeviceService rfidDeviceService;
-
-    /** 在线状态：在线 */
-    private static final String ONLINE_STATUS_ONLINE = "1";
-
-    /** 在线状态：离线 */
-    private static final String ONLINE_STATUS_OFFLINE = "0";
-
-    /** 告警状态：告警 */
-    private static final String ALARM_STATUS_ALARM = "1";
+    private final RfidDeviceMapper rfidDeviceMapper;
 
     /**
      * 获取首页统计数据
      */
     @GetMapping("/stats")
     public R<RfidDashboardStatsVo> getStats() {
-        RfidDashboardStatsVo stats = new RfidDashboardStatsVo();
-
-        // 设备总数
-        stats.setTotalDevices(rfidDeviceService.count());
-
-        // 在线数量 (online_status = 1)
-        stats.setOnlineDevices(rfidDeviceService.count(
-            Wrappers.<RfidDevice>lambdaQuery().eq(RfidDevice::getOnlineStatus, ONLINE_STATUS_ONLINE)//在线状态(0-离线;1-在线)
-        ));
-
-        // 离线数量 (online_status = 0)
-        stats.setOfflineDevices(rfidDeviceService.count(
-            Wrappers.<RfidDevice>lambdaQuery().eq(RfidDevice::getOnlineStatus, ONLINE_STATUS_OFFLINE)//在线状态(0-离线;1-在线)
-        ));
-
-        // 告警数量 (alarm_status = 1)
-        stats.setAlarmDevices(rfidDeviceService.count(
-            Wrappers.<RfidDevice>lambdaQuery().eq(RfidDevice::getAlarmStatus, ALARM_STATUS_ALARM)//告警状态(0-正常;1-告警)
-        ));
-
-        return R.ok(stats);
+        // 旧接口仍保持原有统计口径，但用一次聚合查询降低首页刷新时的数据库压力。
+        return R.ok(rfidDeviceMapper.selectDashboardStats());
     }
 }
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/RfidReadRecord.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/RfidReadRecord.java
index ce8581a..f507a73 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/RfidReadRecord.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/RfidReadRecord.java
@@ -1,13 +1,13 @@
 package org.dromara.rfid.domain;
 
-import org.dromara.common.mybatis.core.domain.BaseEntity;
-import com.baomidou.mybatisplus.annotation.*;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
-import java.util.Date;
-import com.fasterxml.jackson.annotation.JsonFormat;
+import org.dromara.common.mybatis.core.domain.BaseEntity;
 
 import java.io.Serial;
+import java.util.Date;
 
 /**
  * 读取记录对象
@@ -43,6 +43,11 @@ public class RfidReadRecord extends BaseEntity {
      */
     private Long deviceId;
 
+    /**
+     * 设备编号（冗余存储，避免高频连表查询）
+     */
+    private String deviceCode;
+
     /**
      * 读取状态(1-成功;0-失败)
      */
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/bo/RfidReadRecordBo.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/bo/RfidReadRecordBo.java
index f2b8bbf..b1c9dda 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/bo/RfidReadRecordBo.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/bo/RfidReadRecordBo.java
@@ -37,6 +37,11 @@ public class RfidReadRecordBo extends BaseEntity {
     @NotNull(message = "设备id不能为空", groups = { AddGroup.class, EditGroup.class })
     private Long deviceId;
 
+    /**
+     * 设备编号（查询过滤用，冗余存储字段）
+     */
+    private String deviceCode;
+
     /**
      * 读取状态(1-成功;0-失败)
      */
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/vo/RfidReadRecordVo.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/vo/RfidReadRecordVo.java
index 1cce1fa..d0d34b5 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/vo/RfidReadRecordVo.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/domain/vo/RfidReadRecordVo.java
@@ -12,9 +12,6 @@ import lombok.Data;
 
 import java.io.Serial;
 import java.io.Serializable;
-import java.util.Date;
-
-
 
 /**
  * 读取记录视图对象 rfid_read_record
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/helper/RfidReadRecordTableHelper.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/helper/RfidReadRecordTableHelper.java
index 594bfd3..aba7a8b 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/helper/RfidReadRecordTableHelper.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/helper/RfidReadRecordTableHelper.java
@@ -1,7 +1,6 @@
 package org.dromara.rfid.helper;
 
 import cn.hutool.core.date.DateUtil;
-import cn.hutool.core.util.StrUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.dromara.common.core.utils.SpringUtils;
 
@@ -48,6 +47,14 @@ public class RfidReadRecordTableHelper {
      */
     private static final Map<String, Boolean> TABLE_EXISTS_CACHE = new ConcurrentHashMap<>(64);
 
+    /**
+     * 表存在性检查锁
+     * <p>
+     * 缓存失效的瞬间可能有多个看板请求并发进来，按表名加锁可以避免同时打 information_schema。
+     * </p>
+     */
+    private static final Map<String, Object> TABLE_CHECK_LOCKS = new ConcurrentHashMap<>(64);
+
     /**
      * 缓存刷新时间戳（用于定期刷新缓存）
      */
@@ -72,6 +79,7 @@ public class RfidReadRecordTableHelper {
      */
     public static void clearTableExistsCache() {
         TABLE_EXISTS_CACHE.clear();
+        TABLE_CHECK_LOCKS.clear();
         lastCacheRefreshTime = System.currentTimeMillis();
         log.debug("分表缓存已清除");
     }
@@ -156,19 +164,6 @@ public class RfidReadRecordTableHelper {
         return tableNames;
     }
 
-    /**
-     * 从表名解析日期后缀
-     *
-     * @param tableName 表名
-     * @return 日期字符串，如 20251126
-     */
-    public static String parseDateSuffix(String tableName) {
-        if (StrUtil.isBlank(tableName) || !tableName.startsWith(BASE_TABLE_NAME + "_")) {
-            return null;
-        }
-        return tableName.substring((BASE_TABLE_NAME + "_").length());
-    }
-
     /**
      * 检查表是否存在（带缓存）
      * <p>
@@ -192,15 +187,21 @@ public class RfidReadRecordTableHelper {
             return cached;
         }
 
-        // 查询数据库
-        boolean exists = doCheckTableExists(tableName);
+        Object tableLock = TABLE_CHECK_LOCKS.computeIfAbsent(tableName, key -> new Object());
+        synchronized (tableLock) {
+            // 获取锁后再次读取缓存，避免并发请求重复查询数据库元数据。
+            cached = TABLE_EXISTS_CACHE.get(tableName);
+            if (cached != null) {
+                return cached;
+            }
 
-        // 只缓存存在的表（不存在的表可能后续会创建）
-        if (exists) {
-            TABLE_EXISTS_CACHE.put(tableName, Boolean.TRUE);
+            boolean exists = doCheckTableExists(tableName);
+            // 只缓存存在的表（不存在的表可能后续会创建）
+            if (exists) {
+                TABLE_EXISTS_CACHE.put(tableName, Boolean.TRUE);
+            }
+            return exists;
         }
-
-        return exists;
     }
 
     /**
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/mapper/RfidDeviceMapper.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/mapper/RfidDeviceMapper.java
index c61ce52..023c222 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/mapper/RfidDeviceMapper.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/mapper/RfidDeviceMapper.java
@@ -1,7 +1,9 @@
 package org.dromara.rfid.mapper;
 
 import org.dromara.rfid.domain.RfidDevice;
+import org.dromara.rfid.domain.vo.DashboardVO;
 import org.dromara.rfid.domain.vo.RfidDeviceVo;
+import org.dromara.rfid.domain.vo.RfidDashboardStatsVo;
 import org.dromara.common.mybatis.core.mapper.BaseMapperPlus;
 import com.baomidou.mybatisplus.core.conditions.Wrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
@@ -50,6 +52,20 @@ public interface RfidDeviceMapper extends BaseMapperPlus<RfidDevice, RfidDeviceV
      */
     Long countCustomRfidDevice(@Param(Constants.WRAPPER) Wrapper<RfidDevice> queryWrapper);
 
+    /**
+     * 统计已标识设备的看板概览数据
+     *
+     * @return 已标识设备统计概览
+     */
+    DashboardVO.StatisticsOverview selectMarkedDeviceStatistics();
+
+    /**
+     * 统计首页设备状态数据
+     *
+     * @return 首页统计数据
+     */
+    RfidDashboardStatsVo selectDashboardStats();
+
     /**
      * 分页查询设备信息（自定义条件）
      *
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/DashboardServiceImpl.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/DashboardServiceImpl.java
index f6b1794..878d467 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/DashboardServiceImpl.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/DashboardServiceImpl.java
@@ -71,32 +71,8 @@ public class DashboardServiceImpl implements IDashboardService {
      */
     @Override
     public DashboardVO.StatisticsOverview getOverview() {
-        DashboardVO.StatisticsOverview overview = new DashboardVO.StatisticsOverview();
-
-        // 统计设备总数
-        Long deviceTotal = deviceMapper.selectCount(Wrappers.lambdaQuery(RfidDevice.class)
-            .eq(RfidDevice::getIsMarked, "1"));
-        overview.setDeviceTotal(deviceTotal);
-
-        // 统计在线数量
-        Long onlineCount = deviceMapper.selectCount(Wrappers.lambdaQuery(RfidDevice.class)
-            .eq(RfidDevice::getIsMarked, "1")
-            .eq(RfidDevice::getOnlineStatus, "1"));
-        overview.setOnlineCount(onlineCount);
-
-        // 统计离线数量
-        Long offlineCount = deviceMapper.selectCount(Wrappers.lambdaQuery(RfidDevice.class)
-            .eq(RfidDevice::getIsMarked, "1")
-            .eq(RfidDevice::getOnlineStatus, "0"));
-        overview.setOfflineCount(offlineCount);
-
-        // 统计告警数量（当天告警设备数）
-        Long alarmCount = deviceMapper.selectCount(Wrappers.lambdaQuery(RfidDevice.class)
-            .eq(RfidDevice::getIsMarked, "1")
-            .eq(RfidDevice::getAlarmStatus, "1"));
-        overview.setAlarmCount(alarmCount);
-
-        return overview;
+        // 看板按秒级刷新，统计口径固定为“已标识设备”，一次聚合可减少数据库重复扫描。
+        return deviceMapper.selectMarkedDeviceStatistics();
     }
 
     /**
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidDeviceServiceImpl.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidDeviceServiceImpl.java
index 5cccf3a..4f70547 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidDeviceServiceImpl.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidDeviceServiceImpl.java
@@ -6,7 +6,9 @@ import org.dromara.common.core.utils.StringUtils;
 import org.dromara.common.mybatis.core.page.TableDataInfo;
 import org.dromara.common.mybatis.core.page.PageQuery;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.baomidou.mybatisplus.core.conditions.Wrapper;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -23,7 +25,6 @@ import org.dromara.rfid.helper.RfidReadRecordTableHelper;
 
 import java.util.Date;
 import java.util.List;
-import java.util.Map;
 import java.util.Collection;
 
 /**
@@ -61,7 +62,7 @@ public class RfidDeviceServiceImpl implements IRfidDeviceService {
      */
     @Override
     public TableDataInfo<RfidDeviceVo> queryPageList(RfidDeviceBo bo, PageQuery pageQuery) {
-        LambdaQueryWrapper<RfidDevice> lqw = buildQueryWrapper(bo);
+        Wrapper<RfidDevice> lqw = buildQueryWrapper(bo);
         // 使用自定义 Mapper XML + MyBatis-Plus Wrapper 进行分页查询
         Page<RfidDeviceVo> result = baseMapper.selectCustomRfidDeviceVoPage(pageQuery.build(), lqw);
         return TableDataInfo.build(result);
@@ -75,7 +76,7 @@ public class RfidDeviceServiceImpl implements IRfidDeviceService {
      */
     @Override
     public List<RfidDeviceVo> queryList(RfidDeviceBo bo) {
-        LambdaQueryWrapper<RfidDevice> lqw = buildQueryWrapper(bo);
+        Wrapper<RfidDevice> lqw = buildQueryWrapper(bo);
         // 使用自定义 Mapper XML + MyBatis-Plus Wrapper 查询列表
         return baseMapper.selectCustomRfidDeviceVoList(lqw);
     }
@@ -94,28 +95,50 @@ public class RfidDeviceServiceImpl implements IRfidDeviceService {
         return baseMapper.countCustomRfidDevice(wrapper);
     }
 
-    private LambdaQueryWrapper<RfidDevice> buildQueryWrapper(RfidDeviceBo bo) {
-        Map<String, Object> params = bo.getParams();
-        LambdaQueryWrapper<RfidDevice> lqw = Wrappers.lambdaQuery();
-        lqw.orderByAsc(RfidDevice::getId);
-        lqw.eq(StringUtils.isNotBlank(bo.getDeviceCode()), RfidDevice::getDeviceCode, bo.getDeviceCode());
-        lqw.like(StringUtils.isNotBlank(bo.getDeviceName()), RfidDevice::getDeviceName, bo.getDeviceName());
-        lqw.eq(bo.getLocationId() != null, RfidDevice::getLocationId, bo.getLocationId());
-        lqw.eq(StringUtils.isNotBlank(bo.getDeviceAddress()), RfidDevice::getDeviceAddress, bo.getDeviceAddress());
-        lqw.eq(bo.getDevicePort() != null, RfidDevice::getDevicePort, bo.getDevicePort());
-        lqw.eq(bo.getReadFrequency() != null, RfidDevice::getReadFrequency, bo.getReadFrequency());
-        lqw.eq(StringUtils.isNotBlank(bo.getOnlineStatus()), RfidDevice::getOnlineStatus, bo.getOnlineStatus());
-        lqw.eq(StringUtils.isNotBlank(bo.getAlarmStatus()), RfidDevice::getAlarmStatus, bo.getAlarmStatus());
-        if (StringUtils.isNotBlank(bo.getIsMarked())) {
-            lqw.apply("t.is_marked = {0}", bo.getIsMarked());
-        }
-        lqw.eq(StringUtils.isNotBlank(bo.getCreatedBy()), RfidDevice::getCreatedBy, bo.getCreatedBy());
-        lqw.eq(bo.getCreatedAt() != null, RfidDevice::getCreatedAt, bo.getCreatedAt());
-        lqw.eq(StringUtils.isNotBlank(bo.getUpdatedBy()), RfidDevice::getUpdatedBy, bo.getUpdatedBy());
-        lqw.eq(bo.getUpdatedAt() != null, RfidDevice::getUpdatedAt, bo.getUpdatedAt());
+    private Wrapper<RfidDevice> buildQueryWrapper(RfidDeviceBo bo) {
+        QueryWrapper<RfidDevice> lqw = Wrappers.query();
+        lqw.orderByAsc("t.id");
+        lqw.eq(StringUtils.isNotBlank(bo.getDeviceCode()), "t.device_code", bo.getDeviceCode());
+        lqw.like(StringUtils.isNotBlank(bo.getDeviceName()), "t.device_name", bo.getDeviceName());
+        appendLocationScopeCondition(lqw, bo.getLocationId());
+        lqw.eq(StringUtils.isNotBlank(bo.getDeviceAddress()), "t.device_address", bo.getDeviceAddress());
+        lqw.eq(bo.getDevicePort() != null, "t.device_port", bo.getDevicePort());
+        lqw.eq(bo.getReadFrequency() != null, "t.read_frequency", bo.getReadFrequency());
+        lqw.eq(StringUtils.isNotBlank(bo.getOnlineStatus()), "t.online_status", bo.getOnlineStatus());
+        lqw.eq(StringUtils.isNotBlank(bo.getAlarmStatus()), "t.alarm_status", bo.getAlarmStatus());
+        // 设备表与位置表都有 is_marked 字段，显式指定 t 别名，避免连表查询出现歧义。
+        lqw.eq(StringUtils.isNotBlank(bo.getIsMarked()), "t.is_marked", bo.getIsMarked());
+        lqw.eq(StringUtils.isNotBlank(bo.getCreatedBy()), "t.created_by", bo.getCreatedBy());
+        lqw.eq(bo.getCreatedAt() != null, "t.created_at", bo.getCreatedAt());
+        lqw.eq(StringUtils.isNotBlank(bo.getUpdatedBy()), "t.updated_by", bo.getUpdatedBy());
+        lqw.eq(bo.getUpdatedAt() != null, "t.updated_at", bo.getUpdatedAt());
         return lqw;
     }
 
+    /**
+     * 追加位置范围筛选。
+     * <p>
+     * 设备只绑定到 3-工位；左侧树点到 1-车间或 2-工序时，需要展开到其所有叶子工位，
+     * 避免按父节点 id 精确匹配导致列表为空。
+     */
+    private void appendLocationScopeCondition(QueryWrapper<RfidDevice> lqw, Long locationId) {
+        if (locationId == null) {
+            return;
+        }
+        lqw.and(wrapper -> wrapper
+            .eq("t.location_id", locationId)
+            .or()
+            .apply("""
+                exists (
+                    select 1
+                    from rfid_location leaf
+                    where leaf.id = t.location_id
+                      and leaf.location_type = '3'
+                      and find_in_set({0}, leaf.ancestors) > 0
+                )
+                """, locationId));
+    }
+
     /**
      * 新增设备信息
      *
@@ -153,14 +176,14 @@ public class RfidDeviceServiceImpl implements IRfidDeviceService {
      */
     private void validEntityBeforeSave(RfidDevice entity){
         // 业务编号 deviceCode 唯一校验
-        // if (StringUtils.isNotBlank(entity.getDeviceCode())) {
-        //     boolean exists = baseMapper.existsRfidDevice(Wrappers.<RfidDevice>lambdaQuery()
-        //         .eq(RfidDevice::getDeviceCode, entity.getDeviceCode())
-        //         .ne(entity.getId() != null, RfidDevice::getId, entity.getId()));
-        //     if (exists) {
-        //         throw new ServiceException("设备编号已存在");
-        //     }
-        // }
+        if (StringUtils.isNotBlank(entity.getDeviceCode())) {
+            boolean exists = baseMapper.existsRfidDevice(Wrappers.<RfidDevice>lambdaQuery()
+                .eq(RfidDevice::getDeviceCode, entity.getDeviceCode())
+                .ne(entity.getId() != null, RfidDevice::getId, entity.getId()));
+            if (exists) {
+                throw new ServiceException("设备编号已存在");
+            }
+        }
 
         // IP地址 deviceAddress 唯一校验
         if (StringUtils.isNotBlank(entity.getDeviceAddress())) {
diff --git a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidReadRecordServiceImpl.java b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidReadRecordServiceImpl.java
index 8d6f46e..9ed8187 100644
--- a/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidReadRecordServiceImpl.java
+++ b/ruoyi-modules/hw-rfid/src/main/java/org/dromara/rfid/service/impl/RfidReadRecordServiceImpl.java
@@ -21,6 +21,8 @@ import org.dromara.rfid.domain.RfidReadRecord;
 import org.dromara.rfid.mapper.RfidReadRecordMapper;
 import org.dromara.rfid.service.IRfidReadRecordService;
 
+import java.time.LocalDate;
+import java.time.temporal.ChronoUnit;
 import java.util.Date;
 import java.util.List;
 import java.util.Collection;
@@ -48,6 +50,11 @@ public class RfidReadRecordServiceImpl implements IRfidReadRecordService {
      */
     private static final Pattern BARCODE_CLEAN_PATTERN = Pattern.compile("[\\s\\x00-\\x1F\\x7F]+");
 
+    /**
+     * 多表 UNION 查询最大日期跨度
+     */
+    private static final long MAX_QUERY_DAYS = 30L;
+
     /**
      * 查询读取记录
      *
@@ -77,6 +84,8 @@ public class RfidReadRecordServiceImpl implements IRfidReadRecordService {
      */
     @Override
     public TableDataInfo<RfidReadRecordVo> queryPageList(RfidReadRecordBo bo, PageQuery pageQuery) {
+        assertQueryDateRange(bo);
+
         // 获取实际存在的分表列表
         List<String> tableNames = RfidReadRecordTableHelper.getExistingTableNames(
             bo.getBeginRecordTime(), bo.getEndRecordTime());
@@ -109,6 +118,8 @@ public class RfidReadRecordServiceImpl implements IRfidReadRecordService {
      */
     @Override
     public List<RfidReadRecordVo> queryList(RfidReadRecordBo bo) {
+        assertQueryDateRange(bo);
+
         // 获取实际存在的分表列表
         List<String> tableNames = RfidReadRecordTableHelper.getExistingTableNames(
             bo.getBeginRecordTime(), bo.getEndRecordTime());
@@ -171,6 +182,36 @@ public class RfidReadRecordServiceImpl implements IRfidReadRecordService {
         return lqw;
     }
 
+    /**
+     * 校验分表查询日期范围
+     * <p>
+     * 读取记录是高频数据，全量列表/导出接口必须限制跨表范围，避免一次请求扫描过多日分表。
+     * </p>
+     */
+    private void assertQueryDateRange(RfidReadRecordBo bo) {
+        Date beginRecordTime = bo.getBeginRecordTime();
+        Date endRecordTime = bo.getEndRecordTime();
+        if (beginRecordTime == null && endRecordTime == null) {
+            return;
+        }
+
+        LocalDate start = beginRecordTime != null
+            ? cn.hutool.core.date.DateUtil.toLocalDateTime(beginRecordTime).toLocalDate()
+            : LocalDate.now();
+        LocalDate end = endRecordTime != null
+            ? cn.hutool.core.date.DateUtil.toLocalDateTime(endRecordTime).toLocalDate()
+            : LocalDate.now();
+        if (start.isAfter(end)) {
+            LocalDate temp = start;
+            start = end;
+            end = temp;
+        }
+        long queryDays = ChronoUnit.DAYS.between(start, end) + 1;
+        if (queryDays > MAX_QUERY_DAYS) {
+            throw new ServiceException("读取记录查询范围不能超过" + MAX_QUERY_DAYS + "天");
+        }
+    }
+
     /**
      * 批量清理条码中的不可见字符
      *
@@ -204,20 +245,6 @@ public class RfidReadRecordServiceImpl implements IRfidReadRecordService {
         record.setBarcode(cleanedBarcode);
     }
 
-    /**
-     * 将字符串转换为十六进制表示，用于调试
-     */
-    private String toHexString(String str) {
-        if (str == null) {
-            return "null";
-        }
-        StringBuilder sb = new StringBuilder();
-        for (char c : str.toCharArray()) {
-            sb.append(String.format("%02X ", (int) c));
-        }
-        return sb.toString().trim();
-    }
-
     /**
      * 新增读取记录
      * <p>