The possible intraoperative risks of elderly patients are as follows: 1. Elderly patients are often combined with diabetes mellitus and hypertension, intraoperative blood glucose and blood pressure can appear to rise and fall, in addition, there can also be various changes in vital signs; 2. The greatest risk when blood pressure is elevated that causes vascular accidents, hypertension can cause lesions of organs. If blood pressure rises, it can cause intracranial and fundus bleeding and myocardial infarction or vascular burst; 3. Elevated blood glucose can cause osmotic coma, which is manifested as postoperative anesthesia subsides, but does not wake up with high blood glucose value; 4. Patients with low blood pressure tolerate drugs poorly, and shock state can occur with normal administration, so it is necessary to reduce the dose of drugs, and before anesthesia, vasoactive drugs should be prepared to regulate blood pressure at any time.