Gastrectomy is a common surgical method for gastric cancer surgical treatment. Most of the proximal and distal gastric resections, total gastrectomy and lymph node dissection are more frequently used in clinical practice, which will cause different degrees of damage to gastric function and a series of postoperative complications. 1.Gastric bleeding after gastric cancer surgery: Most of the gastric bleeding after gastric cancer surgery is anastomotic bleeding. 1.For the complication of gastric bleeding due to poor surgical suture and suture money, several stitches can be enhanced to the parts that are not secure after anastomosis and closure of gastric wall during surgery to increase postoperative bleeding. 2, if the bleeding is less can use part of the hemostatic drugs, can also use epinephrine concentrate into the gastric cavity, often can be treated after the situation. 3.If the bleeding is caused by stress ulcer, taking corresponding drugs can mostly treat the postoperative situation. 2.Complicated anastomotic fistula after gastric cancer surgery: Anastomotic fistula is a more serious complication after gastric cancer surgery, which brings great suffering to patients. 1.Placing drainage tube: placing drainage tube after gastric cancer surgery can not only remove residual fluid and residual cancer cells in the abdominal cavity, but also detect whether there is bleeding and fistula formation. If anastomotic fistula occurs, it can be cleaned by flushing and low negative pressure suction to promote healing of the leak. 2.Surgical treatment: Whether to perform surgical treatment after anastomotic fistula attack should be based on the size of the leak, the amount of drainage and the general and partial conditions, among which temperature, pulse, abdominal pain and white blood cell count are often important observation goals. If all of the above are normal, conservative treatment is feasible; if the fistula is large, early onset, high drainage and abdominal pain, then surgical drainage should be the main focus. In addition, if anastomotic fistula occurs after gastric cancer surgery, protein, water and electrolyte balance should be maintained regardless of the treatment method. How to deal with complications after gastric cancer surgery 3. Postoperative intestinal obstruction: postoperative intestinal obstruction is more complicated, and postoperative intestinal obstruction after gastric cancer surgery can be divided into functional intestinal obstruction and mechanical intestinal obstruction. 1. Functional intestinal obstruction: it can be relieved after rehydration and conservative treatment, and the discharging condition can be monitored and understood, and due to the relationship of gravity, it can be ventilated and defecated within 12 hours, and drug discharge can be seen. 2, mechanical intestinal obstruction: the treatment of mechanical intestinal obstruction depends on the detailed condition of the patient. If the patient only shows abdominal distension, ambiguous gas, eructation, vomiting, etc., it can often be relieved by conservative treatment for 3-4 weeks. If the patient shows sudden abdominal pain, vomiting, abdominal muscle spasm, pressure pain, rebound pain, or even intestinal necrosis and shock, emergency surgery should be performed to release the obstruction. In addition, if it is complete intestinal obstruction, it needs to be treated by surgery. 4.Gastric cancer postoperative complication of gastroparesis: a rare complication of gastric cancer postoperative, which can be caused by many factors. It often occurs when fasting or diet changes at the beginning of postoperative period, and gastrointestinal decompression can suck out a small amount of gastric juice, which often exceeds 2000ml/d, accompanied by abdominal distension, chest tightness and epigastric discomfort, which can continue for more than ten days or about 60 days, and if the color of gastric juice changes or the amount increases, it is a sign of recovery of the disease, and when it really deteriorates, the patient can have a sudden change of gastric juice. If the color of gastric juice changes or the volume increases, it is a sign of recovery, and when it really worsens, the patient may feel the sudden emptying of stomach and the volume of gastric juice draining clearly increases until he/she eats normally. Experts also said that although it is very difficult to treat complications of gastric cancer, it is not incurable. Patients with complications may not be suitable for surgery and radiotherapy, but Chinese medicine treatment can have certain effect on patients’ recovery, as Chinese medicine focuses on prescribing the right medicine to regulate the whole body and improve human immune function. In short, postoperative care plays a key role in the recovery and healing of patients. As the saying goes, three parts of treatment and seven parts of care. With the progress of society and the continuous improvement of the medical model, the requirements for nursing care are gradually increasing. Nursing staff should not only have a high degree of responsibility and care, but also have good communication skills and communication skills, not only to closely observe the changes in the patient’s condition and report abnormalities to the doctor within the first time to win time for treatment. In the nursing work, we should also communicate with patients more often, do a good job of psychological care, increase the patient’s sense of security, help the patient to establish confidence, get the patient’s positive cooperation, reduce the occurrence of complications, and promote the early recovery of patients.