The success rate of smog surgery can reach about 90% in clinical practice, and only a small percentage of people may have clinical symptoms. It is often due to the impact on cerebral blood vessels after surgery, which may lead to cerebrovascular lesions that can cause cerebral vascular blockage causing cerebral infarction, or cerebral vascular lesions that lead to cerebral vascular rupture causing cerebral hemorrhage, and patients may have neurological changes that lead to abnormal neurological discharge causing epilepsy symptoms. However, if the condition is more complicated or the site of smoldering disease is very important, the surgery may cause more serious sequelae afterwards, leading to vegetation or the risk of death. Of course, the incidence of this condition is relatively low and is seen clinically by chance, and it is recommended to evaluate before doing the surgery to reduce the risk of rupture of blood vessels.