diff --git a/src/TrackCenter.Application/Services/TrackOrders/TrackOrderService.cs b/src/TrackCenter.Application/Services/TrackOrders/TrackOrderService.cs
index 31f9e43c..f9c05bb0 100644
--- a/src/TrackCenter.Application/Services/TrackOrders/TrackOrderService.cs
+++ b/src/TrackCenter.Application/Services/TrackOrders/TrackOrderService.cs
@@ -222,10 +222,11 @@ public class TrackOrderService : ApplicationServiceBase
 
         foreach (var item in trackDetails)
         {
-            //时间和时区任意一个为空则使用创建时间做为排序参照值
-            var timeTick = ToUnixTimestamp(Math.Abs(item.TrackTimeZone - GlobalConst.NoneTrackTimeZone) < 1
-                ? item.CreateTime
-                : item.TrackTime);
+            // 时区缺失(99999)时仍优先用真实发生时间 TrackTime；仅当 TrackTime 无效才回退 CreateTime。
+            // 旧逻辑在时区缺失时一律用 CreateTime，同批写入会导致时间轴全部显示成同一时刻。
+            var invalidTrackTime = item.TrackTime <= GlobalConst.MinDateTime;
+            var timeSource = invalidTrackTime ? item.CreateTime : item.TrackTime;
+            var timeTick = ToUnixTimestamp(timeSource);
             res.Add(new GetDetailTimelineOutput()
             {
                 IsHighlight = false,