Smog, a name that reads beautifully and beautifully, can easily be associated with the smog in our lives. However, this smoke is different from the various types of smoke we often see because it is present in the human brain. So, what kind of a disease does this smoke actually cause. It was discovered early in modern medicine, around the 1960s, when a Japanese medical expert named it smog because the patient’s image on the cerebral angiogram resembled a cloud of smoke. Because of the backwardness of science and technology at that time, people did not know much about it and called it a rare disease. With the continuous development and progress of medicine, the mystery of smog disease is now being uncovered. Studies have found that the clinical disability and death rate of smog is high, and early detection and timely treatment are crucial. The harm brought by smog disease can be broadly divided into two categories, the first category due to the narrowing or occlusion of the main blood vessels, caused by a serious lack of blood supply to the brain, will cause cerebral ischemia, leading to a series of ischemic symptoms, serious cases will lead to cerebral infarction; the second category of harm is the brain hemorrhage, due to the abnormal wall of the skull base of the vascular network is very thin, very fragile, in the event of rupture caused by cerebral hemorrhage, the consequences are very serious, and sometimes may even endanger The second type of hazard is cerebral hemorrhage. As mentioned above, the dangers of smog are self-evident. In addition, medical experts also found that there are two high prevalence groups of smog, one is children under 10 years old and the other is adults over 40 years old. As children are the high prevalence group of smog, many parents are very worried and would like to remind parents that they should be alert when their children have dizziness, nausea and cognitive impairment and receive surgery as soon as possible. Combined vascular bypass is a standard procedure recognized by the medical community for the treatment of smog, which can establish comprehensive systemic blood flow and ensure smooth blood flow.