Urology patients are mostly elderly patients, and most of the surgical sites are pelvic abdomen. After surgery should pay attention to the following points to prevent complications: 1, pay attention to the lungs: elderly patients (airway sensitivity is weakened), general anesthesia (increased respiratory secretions), postoperative bedridden (wound pain and lying down is not easy to cough) may lead to the occurrence of pneumonia, the disease manifests itself as a high fever, respiratory distress, and is prone to fatal infections. 2, pay attention to the digestive tract: postoperative patients are prone to paralytic intestinal obstruction, (especially now most of the patients will choose to use the pain pump after surgery to increase the time of paralytic intestinal obstruction). The manifestation of delayed exhaust, abdominal distension, severe cases need to go down the gastric tube, anal tube exhaust and so on. Another gastrointestinal risk factor is postoperative stress ulcer, which is a kind of stress reaction after the body is subjected to adverse stimuli, manifested as gastrointestinal bleeding. 3, pay attention to the emergence of embolic complications: elderly patients, pelvic and abdominal surgery, postoperative bed rest, previous history of cardiovascular and cerebrovascular disease are prone to thrombosis, myocardial infarction, cerebral infarction, lower extremity venous thrombosis will cause serious harm to the patient and even life-threatening, especially pulmonary embolism, is the main cause of sudden death in the perioperative period.