diff --git a/api_v1/views/printing/test_plate_order_api.py b/api_v1/views/printing/test_plate_order_api.py
index da58408..f3e5924 100644
--- a/api_v1/views/printing/test_plate_order_api.py
+++ b/api_v1/views/printing/test_plate_order_api.py
@@ -531,6 +531,110 @@ class PlateOrderAPITestCase(TestCase):
         else:
             self.assertEqual(len(response.data), 1)
             self.assertEqual(response.data[0]['is_invalid'], False)
+
+    def test_filter_by_plate_at_from(self):
+        """测试按开版时间起始筛选（带时分秒）"""
+        from django.utils import timezone
+        from datetime import timedelta
+        from urllib.parse import quote
+
+        now = timezone.now()
+        # 创建两个订单，分别在不同时间点
+        order1 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN001',
+            plate_type='圆网',
+            plate_date=now - timedelta(hours=2),
+        )
+        order2 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN002',
+            plate_type='平网',
+            plate_date=now,
+        )
+
+        # 筛选 1 小时前之后的订单（应该只返回 order2）
+        one_hour_ago = quote((now - timedelta(hours=1)).isoformat())
+        response = self.client.get(f'/api/v1/plate-orders/?plate_at_from={one_hour_ago}')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        if isinstance(response.data, dict):
+            ids = [r['id'] for r in response.data['results']]
+        else:
+            ids = [r['id'] for r in response.data]
+        self.assertIn(order2.id, ids)
+        self.assertNotIn(order1.id, ids)
+
+    def test_filter_by_plate_at_to(self):
+        """测试按开版时间结束筛选（带时分秒）"""
+        from django.utils import timezone
+        from datetime import timedelta
+        from urllib.parse import quote
+
+        now = timezone.now()
+        # 创建两个订单，分别在不同时间点
+        order1 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN001',
+            plate_type='圆网',
+            plate_date=now - timedelta(hours=2),
+        )
+        order2 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN002',
+            plate_type='平网',
+            plate_date=now,
+        )
+
+        # 筛选 1 小时前之前的订单（应该只返回 order1）
+        one_hour_ago = quote((now - timedelta(hours=1)).isoformat())
+        response = self.client.get(f'/api/v1/plate-orders/?plate_at_to={one_hour_ago}')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        if isinstance(response.data, dict):
+            ids = [r['id'] for r in response.data['results']]
+        else:
+            ids = [r['id'] for r in response.data]
+        self.assertIn(order1.id, ids)
+        self.assertNotIn(order2.id, ids)
+
+    def test_filter_by_plate_at_range(self):
+        """测试按开版时间范围筛选（带时分秒）"""
+        from django.utils import timezone
+        from datetime import timedelta
+        from urllib.parse import quote
+
+        now = timezone.now()
+        # 创建三个订单，分别在不同时间点
+        order1 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN001',
+            plate_type='圆网',
+            plate_date=now - timedelta(hours=3),
+        )
+        order2 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN002',
+            plate_type='平网',
+            plate_date=now - timedelta(hours=1),
+        )
+        order3 = printing_models.PlateOrder.objects.create(
+            customer=self.customer,
+            design_code='DESIGN003',
+            plate_type='圆网',
+            plate_date=now + timedelta(hours=1),
+        )
+
+        # 筛选 2 小时前到现在之间的订单（应该只返回 order2）
+        two_hours_ago = quote((now - timedelta(hours=2)).isoformat())
+        now_iso = quote(now.isoformat())
+        response = self.client.get(f'/api/v1/plate-orders/?plate_at_from={two_hours_ago}&plate_at_to={now_iso}')
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        if isinstance(response.data, dict):
+            ids = [r['id'] for r in response.data['results']]
+        else:
+            ids = [r['id'] for r in response.data]
+        self.assertIn(order2.id, ids)
+        self.assertNotIn(order1.id, ids)
+        self.assertNotIn(order3.id, ids)
     
     def test_search_by_design_code(self):
         """测试按设计编号搜索"""
diff --git a/api_v1/views/printing/views.py b/api_v1/views/printing/views.py
index 706b5ef..5f67e21 100644
--- a/api_v1/views/printing/views.py
+++ b/api_v1/views/printing/views.py
@@ -564,6 +564,9 @@ class PlateOrderFilterSet(django_filters.FilterSet):
     style_name = django_filters.CharFilter(lookup_expr='icontains')
     plate_date_from = django_filters.DateFilter(field_name='plate_date', lookup_expr='gte')
     plate_date_to = django_filters.DateFilter(field_name='plate_date', method='filter_plate_date_to')
+    # plate_at_from / plate_at_to: 支持带时分秒的精确时间筛选（ISO 8601 格式）
+    plate_at_from = IsoDateTimeFilter(field_name='plate_date', lookup_expr='gte')
+    plate_at_to = IsoDateTimeFilter(field_name='plate_date', lookup_expr='lte')
     required_completion_date_from = IsoDateTimeFilter(field_name='required_completion_date', lookup_expr='gte')
     required_completion_date_to = IsoDateTimeFilter(field_name='required_completion_date', lookup_expr='lte')
     created_date_from = django_filters.DateFilter(field_name='created_at', lookup_expr='gte')
@@ -643,8 +646,10 @@ class PlateOrderViewSet(LimitedModelViewSet):
     - is_mark_frame: 是否打样架（true/false）
     - fabric: 面料（模糊查询）
     - style_name: 款式名称（模糊查询）
-    - plate_date_from: 开版日期起始
-    - plate_date_to: 开版日期结束
+    - plate_date_from: 开版日期起始（仅日期）
+    - plate_date_to: 开版日期结束（仅日期，包含整天）
+    - plate_at_from: 开版时间起始（ISO 8601 格式，含时分秒，如 2024-01-01T08:00:00）
+    - plate_at_to: 开版时间结束（ISO 8601 格式，含时分秒）
     - required_completion_date_from: 要求完成时间起始（含时分秒）
     - required_completion_date_to: 要求完成时间结束
     - created_date_from: 创建日期起始