Life, old age, sickness and death are things that we all have to go through in our life, and we should face them openly and deal with them actively. If life, old age and death are beyond our control, then we should actively fight against diseases, and it is not advisable to avoid treatment. For example, there is a relatively rare smog disease, some patients ask what will happen if the smog disease is not treated. This kind of thinking is not allowed, and should be actively treated, especially in the case of smog, a very dangerous cerebrovascular disease. Smog disease was first discovered by Japanese scholars in the 1960s, and is due to narrowing or occlusion of the main arteries of the brain, followed by abnormal growth of the vascular network at the base of the skull, which is imaged on cerebral angiography as smoke protruding from a cigarette, so it is imaginatively called smog disease. As for some patients who ask what happens if smog is not treated, the consequences can be very serious. Smog can lead to cerebral ischemia, cerebral infarction, and cerebral hemorrhage, and may recur. Whether it is cerebral infarction or cerebral hemorrhage, it is very dangerous and has a high rate of disability and death. If left untreated, smog can lead to lifelong disability or even death. Therefore, once smog disease is detected, it should still be treated actively. With the right and effective surgical methods, smog can be cured. Combined vascular bypass surgery is a very effective treatment that has successfully cured many smog patients from all over the country. Combined vascular bypass surgery starts from both the main vascular channel and the skull base capillary network to establish a comprehensive and perfect side branch blood supply channel, which can improve the blood supply to the brain to the greatest extent and effectively prevent cerebral infarction and cerebral hemorrhage.