diff --git a/src/main/java/com/zcloud/scheduled/DustSensorAlarmScheduled.java b/src/main/java/com/zcloud/scheduled/DustSensorAlarmScheduled.java
index 1ef18fa..c236de0 100644
--- a/src/main/java/com/zcloud/scheduled/DustSensorAlarmScheduled.java
+++ b/src/main/java/com/zcloud/scheduled/DustSensorAlarmScheduled.java
@@ -47,7 +47,7 @@ public class DustSensorAlarmScheduled {
         List<PageData> alarmRecords = new ArrayList<>();
         allSensors.forEach(sensor -> {
             PageData currentData = latestDataMap.stream()
-                    .filter(item -> item.get("DEVICE_SENSOR_ID").equals(sensor.get("DEVICE_SENSOR_ID")))
+                    .filter(item -> item.get("PLC_ID").equals(sensor.get("DEVICE_SENSOR_ID")))
                     .findFirst()
                     .orElse(null);
             if (currentData == null) {