Smoke disease is a relatively rare cerebrovascular disease, many people believe that smoke disease is a cerebrovascular disease, the elderly is the high incidence of the population, middle-aged and young people are not pay attention to, think that this disease will not fall on their heads. However, surprisingly, the high incidence of smog disease is children under 10 years old and middle-aged people around 40 years old, so why the smog disease in these two age groups? Smoke disease belongs to a kind of cerebrovascular disease, also known as spontaneous skull base arterial ring occlusion, is a chronic cerebrovascular disease characterized by slow thickening of the intima of the arteries at the end of the internal carotid artery and the beginning of the anterior and middle cerebral arteries, gradual narrowing of the arterial lumen to occlusion, compensatory expansion of the penetrating arteries at the base of the brain, and the formation of a smoke-like vascular network. “The blood vessels in the brain are like the branches of a tree, and the blood from the main trunk reaches all parts of the brain through the branches, but the main trunk is blocked in smoky patients. When the trunk is blocked, numerous capillaries grow to replace it, which, when viewed on angiography, looks like smoke rising from a chimney, hence the image of smog. In children, the symptoms of smog are mainly cerebral ischemia, while in adults, the symptoms are cerebral hemorrhage or cerebral ischemia. The main clinical manifestations of smog are limb paralysis, aphasia, epilepsy, severe headache, fainting, and impaired consciousness. If patients cannot be treated early, multiple occurrences of cerebral ischemia or cerebral hemorrhage will be more and more harmful to their bodies. Therefore, early detection and timely treatment are very important. At present, Jin Yongjian’s team in the Department of Neurosurgery for Cerebrovascular Diseases of Beijing Aviation General Hospital carries out “combined vascular bypass surgery”, which is a compound surgery, including direct bypass + indirect bypass, to rapidly establish blood flow side branch channels to improve local blood supply to the brain through direct bypass, while indirect bypass is performed to induce the formation of neovascularization in a larger area, resulting in a larger The indirect bypass will induce the formation of neovascularization in a larger area to improve the blood supply to the brain and restore the normal blood supply to the brain, so that the symptoms of smog disappear and the patient returns to normal.