The judgment of whether gastric cancer surgery is large-scale surgery is as follows: 1. tertiary gastric cancer surgery: such as major gastrectomy, which is small in scale; 2. tertiary gastric cancer surgery: generally requires an associate chief physician or above to perform the main surgery, which may be large-scale surgery in some county hospitals and other primary hospitals, and routine surgery in larger specialized hospitals, especially distal gastric cancer radical surgery; 3. total gastrectomy: the incidence of combined gastroesophageal tumors is on the rise, and patients need to undergo total gastrectomy treatment, which is a large-scale surgery.