diff --git a/api_v2/tests.py b/api_v2/tests.py
index 9cb8090..cd489cd 100644
--- a/api_v2/tests.py
+++ b/api_v2/tests.py
@@ -747,22 +747,16 @@ class PlateOrderByProcessNodeV2APITest(TestCase):
         self.assertTrue(any(p['key'] == 'temperature' and p['value'] == '25' for p in resp.data['parameters']))
 
         ids = [item['id'] for item in resp.data['results']]
-        self.assertEqual(set(ids), {self.po_state2_old.id, self.po_state2_new.id})
+        self.assertEqual(set(ids), {self.po_state3.id})
 
         # results 必须包含“订单维度”的参数值（同一节点下不同订单可不同）
         by_id = {item['id']: item for item in resp.data['results']}
-        self.assertIn('created_by', by_id[self.po_state2_old.id])
-        self.assertIn('created_by', by_id[self.po_state2_new.id])
-        self.assertIn('process_parameters', by_id[self.po_state2_old.id])
-        self.assertIn('process_parameters', by_id[self.po_state2_new.id])
+        self.assertIn('created_by', by_id[self.po_state3.id])
+        self.assertIn('process_parameters', by_id[self.po_state3.id])
 
-        # po_state2_old：来自已撤销的 state2 提交记录
+        # po_state3：已完成 state2，但未提交参数，value 应为 null
         self.assertTrue(
-            any(p['key'] == 'temperature' and p['value'] == '30' for p in by_id[self.po_state2_old.id]['process_parameters'])
-        )
-        # po_state2_new：从未提交过 state2 参数，value 应为 null
-        self.assertTrue(
-            any(p['key'] == 'temperature' and p['value'] is None for p in by_id[self.po_state2_new.id]['process_parameters'])
+            any(p['key'] == 'temperature' and p['value'] is None for p in by_id[self.po_state3.id]['process_parameters'])
         )
 
     def test_process_parameters_schema_and_keys_align_with_template(self):
@@ -788,40 +782,40 @@ class PlateOrderByProcessNodeV2APITest(TestCase):
         resp = self.client.get(self.url, {'process_node_id': self.node1.id})
         self.assertEqual(resp.status_code, 200)
         self.assertEqual(resp.data['parameters'], [])
-        self.assertEqual(len(resp.data['results']), 1)
-        self.assertEqual(resp.data['results'][0]['id'], self.po_state1.id)
-        self.assertEqual(resp.data['results'][0]['process_parameters'], [])
+        self.assertEqual(len(resp.data['results']), 3)
+        ids = {item['id'] for item in resp.data['results']}
+        self.assertEqual(ids, {self.po_state2_old.id, self.po_state2_new.id, self.po_state3.id})
+        for item in resp.data['results']:
+            self.assertEqual(item['process_parameters'], [])
 
     def test_default_ordering_is_minus_created_at(self):
         resp = self.client.get(self.url, {'process_node_id': self.node2.id})
         self.assertEqual(resp.status_code, 200)
         ids = [item['id'] for item in resp.data['results']]
-        self.assertEqual(ids[0], self.po_state2_new.id)
-        self.assertEqual(ids[1], self.po_state2_old.id)
+        self.assertEqual(ids[0], self.po_state3.id)
 
     def test_ordering_param_created_at_asc(self):
         resp = self.client.get(self.url, {'process_node_id': self.node2.id, 'ordering': 'created_at'})
         self.assertEqual(resp.status_code, 200)
         ids = [item['id'] for item in resp.data['results']]
-        self.assertEqual(ids[0], self.po_state2_old.id)
-        self.assertEqual(ids[1], self.po_state2_new.id)
+        self.assertEqual(ids[0], self.po_state3.id)
 
     def test_search_supports_design_code_icontains(self):
         resp = self.client.get(self.url, {'process_node_id': self.node2.id, 'search': 'abc'})
         self.assertEqual(resp.status_code, 200)
         ids = [item['id'] for item in resp.data['results']]
-        self.assertEqual(ids, [self.po_state2_new.id])
+        self.assertEqual(ids, [])
 
     def test_search_supports_pk_without_extra_param(self):
         resp = self.client.get(self.url, {'process_node_id': self.node2.id, 'search': str(self.po_state2_old.id)})
         self.assertEqual(resp.status_code, 200)
         ids = [item['id'] for item in resp.data['results']]
-        self.assertEqual(ids, [self.po_state2_old.id])
+        self.assertEqual(ids, [])
 
     def test_pagination_limit_offset(self):
         resp = self.client.get(self.url, {'process_node_id': self.node2.id, 'limit': 1, 'offset': 0})
         self.assertEqual(resp.status_code, 200)
-        self.assertEqual(resp.data['count'], 2)
+        self.assertEqual(resp.data['count'], 1)
         self.assertEqual(len(resp.data['results']), 1)
 
     def test_param_filter_requires_both_key_and_value(self):
@@ -846,6 +840,43 @@ class PlateOrderByProcessNodeV2APITest(TestCase):
         self.assertEqual(resp.data['count'], 0)
         self.assertEqual(resp.data['results'], [])
 
+    def test_date_filter_requires_both(self):
+        resp = self.client.get(self.url, {'process_node_id': self.node2.id, 'date_from': '2026-02-01'})
+        self.assertEqual(resp.status_code, 400)
+        self.assertIn('date_from', resp.data.get('detail', ''))
+
+        resp = self.client.get(self.url, {'process_node_id': self.node2.id, 'date_to': '2026-02-01'})
+        self.assertEqual(resp.status_code, 400)
+        self.assertIn('date_to', resp.data.get('detail', ''))
+
+    def test_date_filter_applies(self):
+        tz = timezone.get_default_timezone()
+        target_dt = timezone.make_aware(datetime.datetime(2025, 12, 3, 10, 0, 0), tz)
+        printing_models.PlateOrder.objects.filter(id=self.po_state3.id).update(created_at=target_dt)
+
+        resp = self.client.get(
+            self.url,
+            {
+                'process_node_id': self.node2.id,
+                'date_from': '2025-12-03',
+                'date_to': '2025-12-03',
+            },
+        )
+        self.assertEqual(resp.status_code, 200)
+        ids = [item['id'] for item in resp.data['results']]
+        self.assertEqual(ids, [self.po_state3.id])
+
+        resp = self.client.get(
+            self.url,
+            {
+                'process_node_id': self.node2.id,
+                'date_from': '2025-12-04',
+                'date_to': '2025-12-04',
+            },
+        )
+        self.assertEqual(resp.status_code, 200)
+        self.assertEqual(resp.data['results'], [])
+
 
 class PlateOrderByProcessV2APITest(TestCase):
     def setUp(self):
diff --git a/api_v2/views/printing.py b/api_v2/views/printing.py
index 98e21b7..4e42318 100644
--- a/api_v2/views/printing.py
+++ b/api_v2/views/printing.py
@@ -486,10 +486,14 @@ class PlateOrderByProcessNodeView(APIView):
         process_node_id = qp.get('process_node_id')
         param_key = (qp.get('param_key') or '').strip()
         param_value = (qp.get('param_value') or '').strip()
+        date_from = qp.get('date_from')
+        date_to = qp.get('date_to')
         if not process_node_id:
             return Response({'detail': 'process_node_id 为必填参数'}, status=status.HTTP_400_BAD_REQUEST)
         if (param_key and not param_value) or (param_value and not param_key):
             return Response({'detail': 'param_key 与 param_value 必须同时提供'}, status=status.HTTP_400_BAD_REQUEST)
+        if (date_from and not date_to) or (date_to and not date_from):
+            return Response({'detail': 'date_from 与 date_to 必须同时提供'}, status=status.HTTP_400_BAD_REQUEST)
 
         try:
             process_node_id_int = int(process_node_id)
@@ -505,6 +509,22 @@ class PlateOrderByProcessNodeView(APIView):
         except stateflow_models.ProcessNode.DoesNotExist:
             return Response({'detail': 'process_node 不存在'}, status=status.HTTP_404_NOT_FOUND)
 
+        if date_from and date_to:
+            try:
+                start_date = datetime.datetime.strptime(date_from, '%Y-%m-%d').date()
+                end_date = datetime.datetime.strptime(date_to, '%Y-%m-%d').date()
+            except ValueError:
+                return Response({'detail': '日期格式需为 YYYY-MM-DD'}, status=status.HTTP_400_BAD_REQUEST)
+
+            # 闭区间：包含当日 00:00:00 和 23:59:59.999999
+            start_dt = datetime.datetime.combine(start_date, datetime.time.min)
+            end_dt = datetime.datetime.combine(end_date, datetime.time.max)
+
+            if timezone.is_naive(start_dt):
+                start_dt = timezone.make_aware(start_dt, timezone.get_default_timezone())
+            if timezone.is_naive(end_dt):
+                end_dt = timezone.make_aware(end_dt, timezone.get_default_timezone())
+
         # 目标节点信息
         target_state_id = process_node.state_id
         target_order = process_node.order
@@ -525,7 +545,10 @@ class PlateOrderByProcessNodeView(APIView):
             .filter(business_object__isnull=False, business_object__process_id=process_id)
         )
 
-        # NEXT 模式判定：前置节点都已完成（未撤销） + 目标节点尚未完成（未撤销）
+        if date_from and date_to:
+            queryset = queryset.filter(created_at__gte=start_dt, created_at__lte=end_dt)
+
+        # COMPLETED 模式判定：目标节点已完成（未撤销）
         if prev_state_ids:
             queryset = queryset.annotate(
                 completed_prev_states=Count(
@@ -547,7 +570,7 @@ class PlateOrderByProcessNodeView(APIView):
                 ),
                 distinct=True,
             )
-        ).filter(completed_target=0)
+        ).filter(completed_target__gt=0)
 
         if param_key and param_value:
             matching_logs = stateflow_models.StateFlowRecord.objects.filter(
diff --git a/docs/api_v2_plate_orders_by_process_node_2026-02-06.md b/docs/api_v2_plate_orders_by_process_node_2026-02-06.md
index 5026497..9f368f9 100644
--- a/docs/api_v2_plate_orders_by_process_node_2026-02-06.md
+++ b/docs/api_v2_plate_orders_by_process_node_2026-02-06.md
@@ -15,6 +15,8 @@
 - search：string
   - 纯数字：同时匹配 id 精确 + design_code 模糊
   - 非纯数字：design_code 模糊
+- date_from：string，YYYY-MM-DD（与 date_to 成对提供）
+- date_to：string，YYYY-MM-DD（与 date_from 成对提供）
 - ordering：string，默认 -created_at
   - 可选字段：id / created_at / updated_at / design_code
 - limit：int，分页大小（默认 20）
@@ -79,6 +81,5 @@
 
 ## 备注（查询流程）
 - 起点为 PlateOrder 查询，再通过 business_object 的状态日志进行筛选。
-- “当前处于该节点”的判定采用 NEXT 模式：
-  - 目标节点前置节点全部完成（未撤销）
-  - 目标节点尚未完成（未撤销）
+- “当前已完成”模式判定：
+  - 目标节点已完成（未撤销）