diff --git a/apps/product/management/commands/check_serial_number.py b/apps/product/management/commands/check_serial_number.py
index 75d1a693..d9caf69a 100644
--- a/apps/product/management/commands/check_serial_number.py
+++ b/apps/product/management/commands/check_serial_number.py
@@ -12,6 +12,7 @@ class Command(BaseCommand):
         tags = Tag.objects.filter(category=category, products__isnull=False)
         for tag in tqdm(tags, desc='Update serial number for product'):
             tag.products.all().update(serial_number=tag.value)
+            tag.products.clear()
 
         self.stdout.write(self.style.WARNING(f'Check serial number product end.'))