Gastrectomy may cause digestive disorders, anastomotic fistula or stenosis, and even bleeding and perforation if the ligature is not tightly tied after surgery. 1. Digestive dysfunction: after surgery, due to the partial loss of stomach, food storage and digestion will be affected, with time, the remaining stomach can usually gradually replace its storage and digestion function. 2. Anastomotic fistula or stenosis: this is due to the anastomosis technology is not good, the patient’s nutritional status is too poor or tumor disease leads to double wound healing, can cause anastomotic fistula or stenosis, through the conservative treatment can alleviate the related symptoms until the patient is cured, if it can not be alleviated through the conservative treatment, but also need to carry out a second operation. 3. Bleeding: after gastrectomy, if the ligated blood vessels are not tight or the sutures fall off, there may be more obvious or larger bleeding around 12 hours after the operation, which may lead to perforation of the anastomosis in severe cases, which usually requires a second operation. After gastrectomy surgery, medical personnel need to observe the patient more often, and if abnormalities are found, appropriate treatment measures need to be taken in a timely manner, and if the patient feels uncomfortable with the symptoms, he or she can also communicate with the doctor in a timely manner.