diff --git a/api_v1/views/printing/views.py b/api_v1/views/printing/views.py
index 6f53a24..c6831ac 100644
--- a/api_v1/views/printing/views.py
+++ b/api_v1/views/printing/views.py
@@ -77,12 +77,23 @@ class PrintingOrderFilterSet(django_filters.FilterSet):
     outgoing_date_from = django_filters.DateFilter(field_name='outgoing_date', lookup_expr='gte')
     outgoing_date_to = django_filters.DateFilter(field_name='outgoing_date', lookup_expr='lte')
     created_date_from = django_filters.DateFilter(field_name='created_at', lookup_expr='gte')
-    created_date_to = django_filters.DateFilter(field_name='created_at', lookup_expr='lte')
+    created_date_to = django_filters.DateFilter(field_name='created_at', method='filter_created_date_to')
     
     class Meta:
         model = models.PrintingOrder
         fields = ['customer', 'is_urgent', 'is_fabric_received', 'is_invalid']
 
+    def filter_created_date_to(self, queryset, name, value):
+        """
+        过滤 created_at <= 指定日期的 23:59:59.999999
+        使用 lt 次日 00:00:00 实现，确保包含整天
+        """
+        if value:
+            from datetime import timedelta
+            next_day = value + timedelta(days=1)
+            return queryset.filter(created_at__lt=next_day)
+        return queryset
+
 
 @method_decorator(cache_page(20), name='list')
 class PrintingOrderViewSet(LimitedModelViewSet):
@@ -552,16 +563,38 @@ class PlateOrderFilterSet(django_filters.FilterSet):
     fabric = django_filters.CharFilter(lookup_expr='icontains')
     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', lookup_expr='lte')
+    plate_date_to = django_filters.DateFilter(field_name='plate_date', method='filter_plate_date_to')
     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')
-    created_date_to = django_filters.DateFilter(field_name='created_at', lookup_expr='lte')
+    created_date_to = django_filters.DateFilter(field_name='created_at', method='filter_created_date_to')
     
     class Meta:
         model = models.PlateOrder
         fields = ['customer', 'salesperson', 'merchandiser', 'urgency_level', 'is_invalid', 'is_ordered']
 
+    def filter_plate_date_to(self, queryset, name, value):
+        """
+        过滤 plate_date <= 指定日期的 23:59:59.999999
+        使用 lt 次日 00:00:00 实现，确保包含整天
+        """
+        if value:
+            from datetime import timedelta
+            next_day = value + timedelta(days=1)
+            return queryset.filter(plate_date__lt=next_day)
+        return queryset
+
+    def filter_created_date_to(self, queryset, name, value):
+        """
+        过滤 created_at <= 指定日期的 23:59:59.999999
+        使用 lt 次日 00:00:00 实现，确保包含整天
+        """
+        if value:
+            from datetime import timedelta
+            next_day = value + timedelta(days=1)
+            return queryset.filter(created_at__lt=next_day)
+        return queryset
+
 
 def _plate_order_last_modified(request, *args, **kwargs):
     """
diff --git a/flower/viewsets.py b/flower/viewsets.py
index ce5974a..02cb3ff 100644
--- a/flower/viewsets.py
+++ b/flower/viewsets.py
@@ -11,12 +11,12 @@ class LimitedLimitOffsetPagination(LimitOffsetPagination):
     """
     带最大限制的 LimitOffsetPagination
     
-    - 默认每页返回 100 条
-    - 最大每页返回 100 条
+    - 默认每页返回 500 条
+    - 最大每页返回 500 条
     - 防止前端请求过多数据
     """
-    default_limit = 300
-    max_limit = 300
+    default_limit = 500
+    max_limit = 500
 
 
 class LimitedModelViewSet(viewsets.ModelViewSet):