The main complications of patients after surgery are as follows: 1, postoperative bleeding, which is one of the more common complications, can include bleeding from the surgical wound as well as bleeding from the incision. If the amount of bleeding is small, most patients can be controlled after active hemostatic treatment, but if the patient’s bleeding is more, it may require blood transfusion or secondary surgical hemostatic treatment.2. Patients with incisional infection, especially if the patient’s primary disease belongs to an acute infection, such as suppurative appendicitis and suppurative cholecystitis, which may cause the wound to become infected after the operation, and it is necessary to enhance the dressing change and drainage treatment of the wound to promote the wound to become infected. 3, patients with postoperative adhesive intestinal obstruction, due to the trauma of surgery will affect the intestinal function, postoperative patients with intestinal dysfunction and incomplete obstruction is more common. Therefore, the diet of post-surgery patients must be based on the exhaust, defecation and then slow recovery, can not be rushed.