When it comes to “smog”, many people are unfamiliar with this disease, or even have not heard of it. Smoke disease is often referred to as cerebrovascular disease, a disease characterized by slow thickening of the intima of the arteries at the end of the internal carotid arteries and the beginning of the anterior and middle cerebral arteries, gradual narrowing of the arterial lumen to occlusion, and compensatory expansion of the penetrating arteries at the base of the brain. What about brain infarction caused by smog disease after having smog disease? Smog is a kind of arteriovenous malformation, and the most common complication of this disease is cerebral infarction and subarachnoid hemorrhage. If a patient develops cerebral infarction, there is no curative drug for smog, and because smog is a developmental disease, effective treatment measures must be taken, and the best way to treat smog is combined vascular bypass surgery, and this technology is very mature at present. The principle of “combined vascular bypass” treatment for smog disease is that, according to the patient’s disease, the combined direct bypass and traditional patching procedures can provide the patient with abundant blood flow to the brain tissue, thus greatly reducing the risk of sudden cerebral infarction and cerebral hemorrhage.