People are not unfamiliar with cerebral ischemia, cerebral hemorrhage and other cerebrovascular diseases in daily life, but few people know about the similar symptoms of “smog disease, and most patients only know about smog disease after they have suffered from it. Smoke disease is a chronic progressive cerebrovascular occlusive disease, mainly manifested by unilateral or bilateral narrowing or occlusion of the middle cerebral artery at the end of the internal carotid artery and/or the proximal anterior cerebral artery with smoky, small blood vessel formation at the base of the brain and soft meninges. The main clinical manifestations are cerebral ischemia, cerebral hemorrhage and epilepsy. The problem of smoker’s disease is that the blood supply to the brain is insufficient. By establishing a pathway for blood supply from normal blood vessels outside the brain to the brain, the blood flow in the brain is improved and the risk of cerebral ischemia and cerebral hemorrhage is reduced. At present, for the treatment of smog disease, Jin Yongjian’s team at the Department of Neurosurgery for Cerebrovascular Diseases of Beijing Aviation General Hospital has combined the advantages of direct bypass and indirect bypass to make the treatment of smog disease progress to a new stage by carrying out “combined vascular bypass surgery” to treat smog disease. Combined is a combination of direct and indirect, and the effect will be better if the vascular bypass is applied afterwards. At present, combined vascular bypass surgery is an effective method for treating smog. Through combined vascular bypass surgery, not only the problem of insufficient blood supply to the brain of smog patients is completely solved, but also the hidden danger of transient ischemic attack is avoided and the occurrence of cerebral hemorrhage is effectively prevented.