diff --git a/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiAlgorithmServiceImpl.java b/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiAlgorithmServiceImpl.java
index adb6a92ac..cc27c40c7 100644
--- a/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiAlgorithmServiceImpl.java
+++ b/src/main/java/com/genersoft/iot/vmp/aiot/service/impl/AiAlgorithmServiceImpl.java
@@ -44,7 +44,7 @@ public class AiAlgorithmServiceImpl implements IAiAlgorithmService {
                 "{\"leave_countdown_sec\":{\"type\":\"int\",\"default\":300,\"min\":0},\"working_hours\":{\"type\":\"list\",\"default\":[]}}"
         });
         PRESET_ALGORITHMS.put("intrusion", new String[]{
-                "周界入侵检测", "person", "检测人员进入指定区域。算法抽帧频率：1帧/秒（固定）",
+                "周界入侵检测", "person", "检测人员进入指定区域。算法抽帧频率：1帧/秒（固定）。入侵消失后,连续confirm_seconds秒无人自动结束告警。",
                 "{\"cooldown_seconds\":{\"type\":\"int\",\"default\":300,\"min\":0},\"confirm_seconds\":{\"type\":\"int\",\"default\":5,\"min\":1}}"
         });
         // 人群聚集检测暂时注释，边缘端未启用