diff --git a/src/main/java/com/openhis/web/outpatient/mapper/OrderMapper.java b/src/main/java/com/openhis/web/outpatient/mapper/OrderMapper.java
index 77e59de56..726358cc8 100644
--- a/src/main/java/com/openhis/web/outpatient/mapper/OrderMapper.java
+++ b/src/main/java/com/openhis/web/outpatient/mapper/OrderMapper.java
@@ -16,6 +16,7 @@ import java.util.Map;
  *
  * 新增：
  *   - updatePayStatus：更新预约订单的支付状态。
+ *   - listOrdersByPatientPaged：为门诊医生工作站的“待写病历”列表提供分页查询，避免一次性加载大量数据导致页面卡顿。
  */
 @Mapper
 public interface OrderMapper {
@@ -48,15 +49,46 @@ public interface OrderMapper {
     })
     List<Map<String, Object>> listOrdersByPatient(@Param("patientId") Long patientId);
 
+    /**
+     * 分页查询门诊医嘱列表（含总量单位），用于“待写病历”页面。
+     *
+     * @param patientId 患者 ID
+     * @param offset    数据偏移量（从0开始）
+     * @param limit     每页记录数
+     * @return 医嘱列表，每条记录包含 totalUnit 字段
+     */
+    @Select({
+        "<script>",
+        "SELECT o.id,",
+        "       o.patient_id        AS patientId,",
+        "       o.doctor_id         AS doctorId,",
+        "       o.item_code         AS itemCode,",
+        "       o.item_name         AS itemName,",
+        "       o.quantity,",
+        "       o.dosage,",
+        "       o.frequency,",
+        "       o.route,",
+        "       o.start_date        AS startDate,",
+        "       o.end_date          AS endDate,",
+        "       tc.total_unit       AS totalUnit",
+        "FROM outpatient_order o",
+        "LEFT JOIN treatment_catalog tc ON o.item_code = tc.item_code",
+        "WHERE o.patient_id = #{patientId}",
+        "ORDER BY o.id ASC",
+        "LIMIT #{limit} OFFSET #{offset}",
+        "</script>"
+    })
+    List<Map<String, Object>> listOrdersByPatientPaged(@Param("patientId") Long patientId,
+                                                       @Param("offset") int offset,
+                                                       @Param("limit") int limit);
+
     /**
      * 更新预约订单的支付状态。
      *
-     * @param orderId 订单主键
-     * @param status  支付状态（0-未支付，1-已支付，2-已缴费，3-已取消等，根据业务实际定义）
+     * @param orderId 预约订单ID
+     * @param status  支付状态码
      * @return 受影响的行数
      */
     @Update("UPDATE outpatient_order SET pay_status = #{status} WHERE id = #{orderId}")
     int updatePayStatus(@Param("orderId") Long orderId, @Param("status") Integer status);
-
-    // 其它已有的 SQL 方法保持不变
 }