diff --git a/src/main/java/com/xydl/cac/iec/IEDCollectService.java b/src/main/java/com/xydl/cac/iec/IEDCollectService.java
index dfefe1e..5543849 100644
--- a/src/main/java/com/xydl/cac/iec/IEDCollectService.java
+++ b/src/main/java/com/xydl/cac/iec/IEDCollectService.java
@@ -135,6 +135,9 @@ public class IEDCollectService {
         value = valueNode.getValueString();
         String time = timeNode.getValueString();
         log.info("采集到" + fc + " " + paramindexNew + "=" + value + ", t=" + time);
+        if ("NaN".equalsIgnoreCase(value)) {
+            return;
+        }
         time = DateUtil.fromZoneUTCToLocal(time);
         if (time == null) {
             return;