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 cc27c40c7..e4fc13fb7 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
@@ -44,8 +44,8 @@ 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）。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}}"
+                "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）。持续检测到人5秒触发告警，持续无人180秒自动结束告警。消失确认期间短暂有人(<5秒)不影响倒计时。",
+                "{\"cooldown_seconds\":{\"type\":\"int\",\"default\":300,\"min\":0},\"confirm_seconds\":{\"type\":\"int\",\"default\":5,\"min\":1},\"confirm_intrusion_seconds\":{\"type\":\"int\",\"default\":5,\"min\":1},\"confirm_clear_seconds\":{\"type\":\"int\",\"default\":180,\"min\":1}}"
         });
         // 人群聚集检测暂时注释，边缘端未启用
         // PRESET_ALGORITHMS.put("crowd_detection", new String[]{