Common complications of abdominal surgery are as follows: First, postoperative pain, pain is a symptom that occurs after most surgeries, pain can be appropriate to give pain medication when the pain is severe, but you need to check the cause of the pain, to avoid pain due to other complications; Second, postoperative bleeding, including intra-abdominal bleeding as well as gastrointestinal bleeding; Third, incision fissure or incisional infection; Fourth, pneumonia, pulmonary atelectasis, Lung infection; five, abdominal abscess; six, intestinal fistula; seven, intestinal obstruction; eight, prolonged bed rest, but also prone to lower extremity venous thrombosis and pulmonary embolism; nine, the elderly or heavier, thin, malnourished patients, but also pressure ulcers; ten, post-surgery gastrointestinal peristalsis is weakened, and abdominal distension; eleven, stress ulcers, easy to appear after major surgery.