General anesthesia has a certain risk, any kind of anesthesia has a certain risk, common several risks are as follows: 1, vascular accident: because general anesthesia belongs to the pathological state, anesthesia, because the elderly vascular elasticity weakened in the process of induction of anesthesia, which may lead to a sudden drop in blood pressure or anesthesia more shallow blood pressure suddenly rise, blood pressure plummeted and rose, the patient is unfavorable, the existence of cardiac and cerebral perfusion or vascular rupture risk, resulting in cardio-cerebral vascular accidents or cardiac infarction, cerebral infarction, cerebral hemorrhage. The risk of cardiovascular and cerebrovascular accidents or cardiac infarction, cerebral infarction, cerebral hemorrhage; 2, allergy: general anesthesia needs to be used with other drugs, including muscle relaxant drugs as well as painkillers. There are different kinds of muscarinic drugs, the risk of which mainly lies in allergy, a small number of patients will have serious anaphylactic shock, but the relative incidence is relatively low. So for allergic patients, should choose a more specific muscle relaxation drugs, try to prevent allergies; 3, complications: a small number of patients will produce malignant hyperthermia complications. So general anesthesia has risks, but the incidence of risk is relatively low, and the preoperative doctor will do the appropriate assessment, such as the ASA (American Society of Anesthesiologists) grading assessment, to assess the anesthetic risk. If the risk of anesthesia is relatively high, appropriate preparations should be made to postpone the operation or stop the operation, if the risk of anesthesia is relatively low, only then will choose to do general anesthesia surgery.