diff --git a/openhis-server-new/openhis-application/src/main/java/com/openhis/web/clinicalmanage/appservice/impl/SurgicalScheduleAppServiceImpl.java b/openhis-server-new/openhis-application/src/main/java/com/openhis/web/clinicalmanage/appservice/impl/SurgicalScheduleAppServiceImpl.java
index 42ef3211..6cf68292 100644
--- a/openhis-server-new/openhis-application/src/main/java/com/openhis/web/clinicalmanage/appservice/impl/SurgicalScheduleAppServiceImpl.java
+++ b/openhis-server-new/openhis-application/src/main/java/com/openhis/web/clinicalmanage/appservice/impl/SurgicalScheduleAppServiceImpl.java
@@ -95,7 +95,7 @@ public class SurgicalScheduleAppServiceImpl implements ISurgicalScheduleAppServi
             }
         }
 
-        // 校验是否重复手术安排
+        // 校验是否重复手术安排（必须在校验手术间占用之前执行，确保能正确返回重复错误）
         // 同一患者 + 同一手术单号 + 同一手术名称 只能有一条有效安排记录
         if (opCreateScheduleDto.getPatientId() != null
                 && opCreateScheduleDto.getOperCode() != null && !opCreateScheduleDto.getOperCode().isEmpty()
@@ -105,18 +105,20 @@ public class SurgicalScheduleAppServiceImpl implements ISurgicalScheduleAppServi
                     opCreateScheduleDto.getOperCode(),
                     opCreateScheduleDto.getOperName()
             );
-            if (existsDuplicate) {
+            if (existsDuplicate != null && existsDuplicate) {
                 return R.fail("该患者此手术单号已存在手术安排，请勿重复提交");
             }
         }
 
-        //校验该时段内手术间是否被占用
-        LocalDateTime scheduleDate = opCreateScheduleDto.getEntryTime();//入室时间
-        String roomCode = opCreateScheduleDto.getRoomCode();//手术室编号
+        // 校验该时段内手术间是否被占用
+        LocalDateTime startTime = opCreateScheduleDto.getEntryTime();//入室时间
         LocalDateTime endTime = opCreateScheduleDto.getEndTime();//手术结束时间
-        Boolean scheduleConflict = surgicalScheduleAppMapper.isScheduleConflict(scheduleDate, endTime, roomCode);
-        if (scheduleConflict) {
-            return R.fail("该时段内手术间被占用");
+        String roomCode = opCreateScheduleDto.getRoomCode();//手术室编号
+        if (startTime != null && endTime != null && roomCode != null && !roomCode.isEmpty()) {
+            Boolean scheduleConflict = surgicalScheduleAppMapper.isScheduleConflict(startTime, endTime, roomCode);
+            if (scheduleConflict != null && scheduleConflict) {
+                return R.fail("该时段内手术间被占用");
+            }
         }
 
         LoginUser loginUser = new LoginUser();
diff --git a/openhis-server-new/openhis-application/src/main/resources/mapper/clinicalmanage/SurgicalScheduleAppMapper.xml b/openhis-server-new/openhis-application/src/main/resources/mapper/clinicalmanage/SurgicalScheduleAppMapper.xml
index 830e0361..b29c9f1a 100644
--- a/openhis-server-new/openhis-application/src/main/resources/mapper/clinicalmanage/SurgicalScheduleAppMapper.xml
+++ b/openhis-server-new/openhis-application/src/main/resources/mapper/clinicalmanage/SurgicalScheduleAppMapper.xml
@@ -140,9 +140,11 @@
     </select>
 <!--    查询时间段内该手术室是否被占用-->
     <select id="isScheduleConflict" resultType="java.lang.Boolean">
-        SELECT COUNT(*) > 0 FROM op_schedule WHERE room_code = #{surgeryRoomId}
-        AND entry_time >= #{startTime}
-        AND end_time &lt; #{endTime}
+        SELECT COUNT(*) > 0 FROM op_schedule 
+        WHERE room_code = #{surgeryRoomId}
+        AND entry_time &lt;= #{endTime}
+        AND end_time >= #{startTime}
+        AND delete_flag = '0'
     </select>
 
     <!-- 检查是否存在重复的手术安排 -->