The causes and treatment of postoperative delirium mainly include the following aspects: First, the causes of postoperative delirium are considered to be caused by anesthetic drugs. Mostly due to incomplete metabolism of anesthetic drugs, or patients are overly sensitive to drugs, etc., resulting in postoperative delirium. For this cause of delirium, you can consider with the application of wake-up drugs such as naloxone hydrochloride or naloxone hydrochloride, and other wake-up drugs to observe how effective. Second, the cause of postoperative delirium is considered to be caused by hepatic encephalopathy and other causes. Mostly due to the patient’s poor liver function or old age, resulting in disorders of bile metabolism in the body, causing hepatic coma and hepatic encephalopathy. For this cause of postoperative delirium, you can consider applying hepatoprotective drugs such as glutamine and soap and water enemas to reduce the symptoms. Third, it is considered to be caused by postoperative infection, which can be relieved by applying anti-inflammatory drugs.