diff --git a/apps/wpmw/views.py b/apps/wpmw/views.py
index 4350a7b4..ea8ad8e2 100644
--- a/apps/wpmw/views.py
+++ b/apps/wpmw/views.py
@@ -9,6 +9,7 @@ from apps.mtm.models import Material
 from rest_framework.exceptions import ParseError
 from django.db import transaction
 from apps.wpmw.filters import WprFilter
+from apps.utils.sql import query_one_dict
 
 
 class WprViewSet(CustomListModelMixin, RetrieveModelMixin, ComplexQueryMixin, CustomGenericViewSet):
@@ -60,16 +61,29 @@ class WprViewSet(CustomListModelMixin, RetrieveModelMixin, ComplexQueryMixin, Cu
         if not prefix:
             raise ParseError("请传入前缀参数")
         with_unsubmit = request.query_params.get("with_unsubmit", "yes")
-        wpr_qs_last = Wpr.objects.filter(number_out__startswith=prefix).order_by("number_out").last()
+        # wpr_qs_last = Wpr.objects.filter(number_out__startswith=prefix).order_by("number_out").last()
+        # 使用原始sql
+        query = """
+                SELECT id, number_out FROM wpmw_wpr 
+                WHERE number_out ~ %s order by number_out desc limit 1
+                """
+        pattern = f'^{prefix}[0-9]+$'
         number_outs = []
+        wpr_qs_last = query_one_dict(query, [pattern])
         if wpr_qs_last:
-            number_outs.append(wpr_qs_last.number_out)
+            number_outs.append(wpr_qs_last["number_out"])
         # 查找未出库的记录
         if with_unsubmit == "yes":
-            mioitemw_last = MIOItemw.objects.filter(
-                number_out__isnull=False, number_out__startswith=prefix).order_by("number_out").last()
+            # mioitemw_last = MIOItemw.objects.filter(
+            #     number_out__isnull=False, number_out__startswith=prefix).order_by("number_out").last()
+            query2 = """
+                select mioitemw.id, mioitemw.number_out from inm_mioitemw mioitemw left join inm_mioitem mioitem on mioitem.id = mioitemw.mioitem_id
+                left join inm_mio mio on mio.id = mioitem.mio_id
+                where mio.submit_time is null and mioitemw.number_out ~ %s order by mioitemw.number_out desc limit 1
+                    """
+            mioitemw_last = query_one_dict(query2, [pattern])
             if mioitemw_last:
-                number_outs.append(mioitemw_last.number_out)
+                number_outs.append(mioitemw_last["number_out"])
         if number_outs:
             number_outs.sort()
             number_out_last = number_outs[-1]