diff --git a/src/SJZY.Track.Application/CAP/EventHandlers/TrackPushEventHandler.cs b/src/SJZY.Track.Application/CAP/EventHandlers/TrackPushEventHandler.cs
index 619add38..628c4d17 100644
--- a/src/SJZY.Track.Application/CAP/EventHandlers/TrackPushEventHandler.cs
+++ b/src/SJZY.Track.Application/CAP/EventHandlers/TrackPushEventHandler.cs
@@ -463,7 +463,10 @@ public class TrackPushEventHandler : ITransientDependency, ICapSubscribe
                     if (string.IsNullOrWhiteSpace(compareFields))
                         return trackIdentifies.Contains($"{code}{timeStr}");
 
-                    if (((JsonElement) x["extra"]!).TryGetProperty(compareFields, out var comparerValueJsonElement))
+                    var extra =  x.GetValueOrDefault("extra");
+                    if (extra == null) return false;
+
+                    if (((JsonElement) extra).TryGetProperty(compareFields, out var comparerValueJsonElement))
                         return trackIdentifies.Contains($"{code}{TextJsonHelper.GetString(comparerValueJsonElement)}");
 
                     return trackIdentifies.Contains($"{code}{null}");