diff --git a/src/SJZY.Track.Repository/Queries/ProvideQueries.cs b/src/SJZY.Track.Repository/Queries/ProvideQueries.cs
index 119ba0aa..bbb186f9 100644
--- a/src/SJZY.Track.Repository/Queries/ProvideQueries.cs
+++ b/src/SJZY.Track.Repository/Queries/ProvideQueries.cs
@@ -94,10 +94,11 @@ public class ProvideQueries : ISugarRepository, IProvideQueries,
 
     public async Task<List<string>> MapTrackCodesAsync(int upSubSystemId, int subSystemId, params string[] trackCodes)
     {
+        // 根据上游code得到下游code
         return await Context.Queryable<TrackContentMapEntity>()
-            .Where(x => x.SubSystemId == upSubSystemId && x.MapSubSystemId == subSystemId &&
-                        trackCodes.Contains(x.TrackContentCode))
-            .Select(x => x.MapTrackContentCode)
+            .Where(x => x.SubSystemId == subSystemId && x.MapSubSystemId == upSubSystemId &&
+                        trackCodes.Contains(x.MapTrackContentCode))
+            .Select(x => x.TrackContentCode)
             .ToListAsync();
     }