The advantage of total gastrectomy is that it eradicates the stomach tumor and prevents recurrence as much as possible. The disadvantage is that it affects the digestive function and postoperative complications occur. 1. Advantages: Total gastrectomy can cure stomach cancer and other malignant tumors of the stomach and help rebuild the digestive tract. Total gastrectomy is to remove all the stomach of the patient, and then perform anastomosis or reconstruction of esophagus and jejunum to help the patient rebuild the digestive tract and achieve the purpose of gastric cancer eradication, and reduce the probability of postoperative recurrence. 2. Disadvantages: affecting digestive function and postoperative complications. After total gastrectomy, it mainly affects the digestion and absorption of food. Patients should pay attention to light diet, small meals, moderate exercise. Postoperative anastomotic fistula is a more serious complication after gastric cancer surgery; postoperative adhesion may cause adhesive intestinal obstruction due to extensive adhesion of intestinal tubes; postoperative lack of iron absorption in gastric wall may lead to the occurrence of iron-deficiency anemia, which needs to be injected with vitamin B12 and supplemented with iron therapy. It is recommended that patients with any discomfort after total gastrectomy should consult the doctor in time, and under the guidance of professional doctors, actively treat the disease to avoid delay.