diff --git a/src/SJZY.Track.Application/CAP/EventHandlers/TrackUpsertEventHandler.cs b/src/SJZY.Track.Application/CAP/EventHandlers/TrackUpsertEventHandler.cs
index 0f68fcda..79ece4b4 100644
--- a/src/SJZY.Track.Application/CAP/EventHandlers/TrackUpsertEventHandler.cs
+++ b/src/SJZY.Track.Application/CAP/EventHandlers/TrackUpsertEventHandler.cs
@@ -272,8 +272,11 @@ public class TrackUpsertEventHandler : ITransientDependency, ICapSubscribe
 
                 existTracks = existTracks.Where(x =>
                 {
+                    var oldExtraDict = GetExtraDictForTextJson(x.Extra);
                     // tips：注意兼容性，历史轨迹的字段可能为空
-                    if (x.Extra == null || !extraDict.TryGetValue(@event.CompareFields, out var oldValue))
+                    if (x.Extra == null
+                        || oldExtraDict == null
+                        || !oldExtraDict.TryGetValue(@event.CompareFields, out var oldValue))
                     {
                         return false;
                     }