diff --git a/src/main/java/com/syjiaer/clinic/server/service/patient/PatientRegistrationService.java b/src/main/java/com/syjiaer/clinic/server/service/patient/PatientRegistrationService.java
index 3fe1e90..f83e609 100644
--- a/src/main/java/com/syjiaer/clinic/server/service/patient/PatientRegistrationService.java
+++ b/src/main/java/com/syjiaer/clinic/server/service/patient/PatientRegistrationService.java
@@ -298,6 +298,7 @@ public class PatientRegistrationService extends BaseService {
         if (query.getEndTime() != null) {
             PatientQueryWrapper.le("update_datetime", query.getEndTime());
         }
+        PatientQueryWrapper.orderByDesc("update_datetime");
 
         return PatientQueryWrapper;
     }