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 a0d145fe..beb47b12 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
@@ -883,7 +883,7 @@ public class DetectionServiceImpl {
                 .filter(x -> v == 0 ? NumberUtil.isIn(devSubtractChannelData(x, v, errSysDtl.getErrorValueType()),
                                     BigDecimal.valueOf(-errSysDtl.getMaxErrorValue()),
                                     BigDecimal.valueOf(errSysDtl.getMaxErrorValue())) :
-                        x > 0 && NumberUtil.isIn(devSubtractChannelData(x, v, errSysDtl.getErrorValueType()),
+                        x != 0 && NumberUtil.isIn(devSubtractChannelData(x, v, errSysDtl.getErrorValueType()),
                         BigDecimal.valueOf(-errSysDtl.getMaxErrorValue()),
                         BigDecimal.valueOf(errSysDtl.getMaxErrorValue()))).collect(Collectors.toList());
         isData(dataRule, harmDataList, data, qualifiedList);