diff --git a/web-infrastructure/src/main/resources/mapper/KeyProjectCameraMapper.xml b/web-infrastructure/src/main/resources/mapper/KeyProjectCameraMapper.xml
index 60c6afe..610cb81 100644
--- a/web-infrastructure/src/main/resources/mapper/KeyProjectCameraMapper.xml
+++ b/web-infrastructure/src/main/resources/mapper/KeyProjectCameraMapper.xml
@@ -92,7 +92,7 @@
         SELECT
             lpc.*,
             c.video_name cameraName,
-            c.is_online,
+            IFNULL(c.is_online,0) is_online,
             kpai.algorithm_id,
             group_concat(DISTINCT a.name) as algorithmType
         FROM key_project_camera lpc