diff --git a/src/Shentun.Peis.Application/LisRequests/LisRequestAppService.cs b/src/Shentun.Peis.Application/LisRequests/LisRequestAppService.cs
index d08801d..f1fa17e 100644
--- a/src/Shentun.Peis.Application/LisRequests/LisRequestAppService.cs
+++ b/src/Shentun.Peis.Application/LisRequests/LisRequestAppService.cs
@@ -629,7 +629,7 @@ namespace Shentun.Peis.LisRequests
                              patient
                          }).ToList();
 
-            if (query == null)
+            if (query.Count == 0)
             {
                 throw new UserFriendlyException("检验单号不存在");
             }
@@ -651,7 +651,7 @@ namespace Shentun.Peis.LisRequests
                 }).ToList()
             };
 
-         
+
 
             return resultDto;
         }