diff --git a/src/main/java/com/ycwl/basic/service/task/impl/TaskFaceServiceImpl.java b/src/main/java/com/ycwl/basic/service/task/impl/TaskFaceServiceImpl.java
index 910716e..7921647 100644
--- a/src/main/java/com/ycwl/basic/service/task/impl/TaskFaceServiceImpl.java
+++ b/src/main/java/com/ycwl/basic/service/task/impl/TaskFaceServiceImpl.java
@@ -374,7 +374,13 @@ public class TaskFaceServiceImpl implements TaskFaceService {
             log.debug("时间范围逻辑：景区未设置游览时间限制");
         }
 
-        // 3. TODO: 基于景区配置的其他筛选策略
+
+
+        // 3. 应用设备照片数量限制筛选
+        filteredIds = applyDevicePhotoLimit(filteredIds, allFaceSampleList);
+        log.debug("应用设备照片数量限制筛选完成");
+
+        // 4. TODO: 基于景区配置的其他筛选策略
         // 可以根据 scenicConfig 中的配置来决定是否启用特定筛选
         // 示例：未来可能的筛选策略
         // if (scenicConfig.getEnableLocationFilter() != null && scenicConfig.getEnableLocationFilter()) {
@@ -423,4 +429,71 @@ public class TaskFaceServiceImpl implements TaskFaceService {
 
         return filteredIds;
     }
+
+    /**
+     * 根据设备配置的limit_photo值限制每个设备的照片数量
+     * 
+     * @param acceptedSampleIds 已接受的样本ID列表
+     * @param allFaceSampleList 所有人脸样本实体列表
+     * @return 应用设备照片数量限制后的样本ID列表
+     */
+    private List<Long> applyDevicePhotoLimit(List<Long> acceptedSampleIds, 
+                                           List<FaceSampleEntity> allFaceSampleList) {
+        if (acceptedSampleIds == null || acceptedSampleIds.isEmpty()) {
+            return acceptedSampleIds;
+        }
+
+        // 获取过滤后的样本列表
+        List<FaceSampleEntity> filteredSamples = allFaceSampleList.stream()
+                .filter(sample -> acceptedSampleIds.contains(sample.getId()))
+                .collect(Collectors.toList());
+
+        // 按设备ID分组
+        Map<Long, List<FaceSampleEntity>> samplesByDevice = filteredSamples.stream()
+                .collect(Collectors.groupingBy(FaceSampleEntity::getDeviceId));
+
+        List<Long> resultIds = new ArrayList<>();
+
+        // 处理每个设备的样本
+        for (Map.Entry<Long, List<FaceSampleEntity>> entry : samplesByDevice.entrySet()) {
+            Long deviceId = entry.getKey();
+            List<FaceSampleEntity> deviceSamples = entry.getValue();
+
+            // 获取设备配置
+            DeviceConfigManager deviceConfig = deviceRepository.getDeviceConfigManager(deviceId);
+            Integer limitPhoto = null;
+            if (deviceConfig != null) {
+                limitPhoto = deviceConfig.getInteger("limit_photo");
+            }
+
+            // 如果没有配置或配置为0，不限制
+            if (limitPhoto == null || limitPhoto <= 0) {
+                List<Long> deviceSampleIds = deviceSamples.stream()
+                        .map(FaceSampleEntity::getId)
+                        .collect(Collectors.toList());
+                resultIds.addAll(deviceSampleIds);
+                log.debug("设备照片限制：设备ID={}, 无限制，保留{}张照片", 
+                         deviceId, deviceSampleIds.size());
+            } else {
+                // 按创建时间倒序排序，取前N张
+                List<FaceSampleEntity> limitedSamples = deviceSamples.stream()
+                        .sorted(Comparator.comparing(FaceSampleEntity::getCreateAt).reversed())
+                        .limit(limitPhoto)
+                        .collect(Collectors.toList());
+                
+                List<Long> limitedIds = limitedSamples.stream()
+                        .map(FaceSampleEntity::getId)
+                        .collect(Collectors.toList());
+                
+                resultIds.addAll(limitedIds);
+                log.debug("设备照片限制：设备ID={}, 限制={}张, 原始{}张，最终{}张", 
+                         deviceId, limitPhoto, deviceSamples.size(), limitedIds.size());
+            }
+        }
+
+        log.info("设备照片数量限制筛选：原始样本数量={}, 筛选后数量={}", 
+                acceptedSampleIds.size(), resultIds.size());
+        
+        return resultIds;
+    }
 }