diff --git a/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java b/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java
index 3fc209e..97f43c6 100644
--- a/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java
+++ b/agri-framework/src/main/java/com/agri/framework/interceptor/MqttMessageHandler.java
@@ -23,9 +23,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.SmartLifecycle;
 import org.springframework.dao.DataAccessException;
 import org.springframework.data.redis.connection.RedisConnection;
-import org.springframework.data.redis.core.Cursor;
 import org.springframework.data.redis.core.RedisCallback;
-import org.springframework.data.redis.core.ScanOptions;
 import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.data.redis.serializer.RedisSerializer;
 import org.springframework.stereotype.Component;
@@ -740,48 +738,10 @@ public class MqttMessageHandler implements SmartLifecycle {
             log.error("【全量取消】Redis批量删除失败", e);
             throw new RuntimeException("全量取消订阅失败：" + e.getMessage());
         }
-
-        // 6. 清理该前端持有的分布式锁（精准扫描，提升效率）
-        Set<String> lockKeys = scanRedisKeys("lock:*:" + clientId);
-        if (lockKeys != null && !lockKeys.isEmpty()) {
-            stringRedisTemplate.delete(lockKeys); // 批量删除锁，无需遍历
-            log.info("【全量取消】清理前端{}持有的{}个分布式锁", clientId, lockKeys.size());
-        }
-
         log.info("【全量取消】前端{}成功取消{}个设备的订阅", clientId, deviceSet.size());
         return frontendTopics;
     }
 
-    // 保留原有scanRedisKeys方法（兼容JDK 8）
-    private Set<String> scanRedisKeys(String pattern) {
-        Set<String> keys = new HashSet<>();
-        try {
-            stringRedisTemplate.execute(new RedisCallback<Void>() {
-                @Override
-                public Void doInRedis(RedisConnection connection) throws DataAccessException {
-                    RedisSerializer<String> serializer = stringRedisTemplate.getStringSerializer();
-                    ScanOptions scanOptions = ScanOptions.scanOptions()
-                            .match(pattern)
-                            .count(100)
-                            .build();
-                    Cursor<byte[]> cursor = connection.scan(scanOptions);
-                    while (cursor.hasNext()) {
-                        byte[] keyBytes = cursor.next();
-                        String key = serializer.deserialize(keyBytes);
-                        if (key != null) {
-                            keys.add(key);
-                        }
-                    }
-                    cursor.close();
-                    return null;
-                }
-            });
-        } catch (Exception e) {
-            log.error("Redis Scan查询失败，pattern={}", pattern, e);
-        }
-        return keys;
-    }
-
     /**
      * 实际业务中：查询指定用户名下的所有设备ID（需替换为你的DAO/Service逻辑）
      * @return 设备ID列表