diff --git a/fys-system/src/main/java/com/fuyuanshen/modules/system/service/impl/DeviceTypeServiceImpl.java b/fys-system/src/main/java/com/fuyuanshen/modules/system/service/impl/DeviceTypeServiceImpl.java
index c97a44a..a532b28 100644
--- a/fys-system/src/main/java/com/fuyuanshen/modules/system/service/impl/DeviceTypeServiceImpl.java
+++ b/fys-system/src/main/java/com/fuyuanshen/modules/system/service/impl/DeviceTypeServiceImpl.java
@@ -177,7 +177,24 @@ public class DeviceTypeServiceImpl extends ServiceImpl<DeviceTypeMapper, DeviceT
     @Override
     @Transactional(rollbackFor = Exception.class)
     public void deleteAll(List<Long> ids) {
-        deviceTypeMapper.deleteBatchIds(ids);
+        // 查询所有与 device 关联的 deviceType IDs
+        List<Device> deviceList = deviceMapper.selectList(new QueryWrapper<Device>().in("device_type", ids));
+        // 提取与 device 关联的 deviceType IDs
+        List<Long> filteredIds = deviceList.stream()
+                .map(Device::getDeviceType)
+                .distinct()
+                .collect(Collectors.toList());
+        // 从原始 ids 中移除已关联 device 的 id（即过滤掉能查到结果的 id）
+        List<Long> idsToBeDeleted = ids.stream()
+                .filter(id -> !filteredIds.contains(id))
+                .collect(Collectors.toList());
+        if (idsToBeDeleted.isEmpty()) {
+            throw new BadRequestException("选中设备类型已绑定设备，请先解绑设备！！！");
+        }
+        // 删除过滤后的 id 列表
+        deviceTypeMapper.deleteBatchIds(idsToBeDeleted);
+        deviceTypeGrantsMapper.delete(new QueryWrapper<DeviceTypeGrants>().in("device_type_id", idsToBeDeleted));
+
     }