diff --git a/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceGroupServiceImpl.java b/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceGroupServiceImpl.java
index c4c053b..234c100 100644
--- a/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceGroupServiceImpl.java
+++ b/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceGroupServiceImpl.java
@@ -357,29 +357,28 @@ public class DeviceGroupServiceImpl implements DeviceGroupService {
 			}
 
 			List<Long> deviceInfoIdList = CommonUtil.commaStr2LongList(bindDeviceForGroupParams.getDeviceInfoIds());
-
 			if (CollectionUtils.isEmpty(deviceInfoIdList)) {
 				return SimpleDataResponse.success();
 			}
 
 			Long groupId = bindDeviceForGroupParams.getDeviceGroupId();
 
-			List<Integer> existedIds = deviceGroupRelationMapperExt.selectDeviceInfoIdsByGroupId(groupId);
-			Set<Integer> existedSet = new HashSet<>(existedIds);
-
-			// 过滤掉已绑定的
-			List<Long> filteredList = deviceInfoIdList.stream()
-					.filter(id -> !existedSet.contains(id.intValue()))
+			// 转换为 Integer 列表用于删除
+			List<Integer> deviceInfoIds = deviceInfoIdList.stream()
+					.map(Long::intValue)
 					.collect(Collectors.toList());
 
-			// 插入新绑定关系
-			if (CollectionUtils.isNotEmpty(filteredList)) {
-				for (Long deviceInfoId : filteredList){
-					DeviceGroupRelation deviceGroupRelation = new DeviceGroupRelation();
-					deviceGroupRelation.setDeviceGroupId(bindDeviceForGroupParams.getDeviceGroupId());
-					deviceGroupRelation.setDeviceInfoId(deviceInfoId.intValue());
-					deviceGroupRelationMapperExt.insertSelective(deviceGroupRelation);
-				}
+			// 2. 使用 Example 删除指定设备ID的所有绑定记录
+			DeviceGroupRelationExample example = new DeviceGroupRelationExample();
+			example.createCriteria().andDeviceInfoIdIn(deviceInfoIds);
+			deviceGroupRelationMapperExt.deleteByExample(example);
+
+			// 3. 插入新绑定关系
+			for (Long deviceInfoId : deviceInfoIdList) {
+				DeviceGroupRelation deviceGroupRelation = new DeviceGroupRelation();
+				deviceGroupRelation.setDeviceGroupId(groupId);
+				deviceGroupRelation.setDeviceInfoId(deviceInfoId.intValue());
+				deviceGroupRelationMapperExt.insertSelective(deviceGroupRelation);
 			}
 
 			return SimpleDataResponse.success();