diff --git a/detection/src/main/java/com/njcn/gather/detection/service/impl/DetectionServiceImpl.java b/detection/src/main/java/com/njcn/gather/detection/service/impl/DetectionServiceImpl.java
index 01152ca4..20ed0c09 100644
--- a/detection/src/main/java/com/njcn/gather/detection/service/impl/DetectionServiceImpl.java
+++ b/detection/src/main/java/com/njcn/gather/detection/service/impl/DetectionServiceImpl.java
@@ -12,6 +12,7 @@ import com.njcn.gather.detection.pojo.enums.DetectionCodeEnum;
 import com.njcn.gather.detection.pojo.param.PreDetectionParam;
 import com.njcn.gather.detection.pojo.po.DevData;
 import com.njcn.gather.detection.pojo.vo.DetectionData;
+import com.njcn.gather.device.pojo.enums.CheckResultEnum;
 import com.njcn.gather.err.pojo.param.PqErrSysParam;
 import com.njcn.gather.err.pojo.po.PqErrSysDtls;
 import com.njcn.gather.err.pojo.vo.ErrDtlsCheckDataVO;
@@ -774,6 +775,9 @@ public class DetectionServiceImpl {
                     ))
                     .collect(Collectors.toList());
             DetectionData a = setDetectionData(isQualified, dataRule, mag, fData, dur, magErrList, channelTypeAList, TYPE_A);
+            if (CollUtil.isEmpty(mag.get(TYPE_A))) {
+                a.setIsData(2);
+            }
             result.setAValue(JSON.toJSONString(a));
             result.setTValue(JSON.toJSONString(a));
             result.setResultFlag(a.getIsData());