diff --git a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
index 1865d26d0..8d12495c3 100644
--- a/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
+++ b/IRaCIS.Core.Application/Service/ReadingCalculate/LuganoCalculateService.cs
@@ -1976,7 +1976,7 @@ namespace IRaCIS.Core.Application.Service.ReadingCalculate
             //无需标记，自主选择
             else
             {
-                result = PET5PSScore.One;
+                return string.Empty;
             }
             return result.GetEnumInt();
         }