Many patients are concerned about the operation time, which cannot be generalized and is closely related to the extent of lesion, difficulty of operation, operation method and surgeon’s experience. Laparoscopic radical gastric cancer surgery is a new surgical method that has emerged in recent years, and the operation time takes 2-4 hours. The time varies from hospital to hospital and from surgeon to surgeon. It may be prolonged depending on the specific situation during the surgery. Compared with traditional radical gastric cancer surgery, the advantages of extra-laparoscopic surgery, extra-laparoscopic surgery has the advantages of minimally invasive, light pain and fast postoperative recovery. The timing of surgery is also different in China and abroad. China is a region with high incidence of gastric cancer, so there are more cases of gastric cancer surgery in China worldwide. In foreign countries, the incidence of gastric cancer is relatively low, so the time of laparoscopic gastric cancer surgery by foreign doctors is longer than that of domestic doctors. Therefore, the time to do laparoscopic gastric cancer surgery in China has been very fast. Compared with foreign countries, the time of laparoscopic gastric cancer surgery in China is shorter and the patient recovers faster.