As we all know, cerebrovascular disease has four high characteristics, namely, high morbidity, high mortality, high disability and high recurrence rate. As a country with a relatively high incidence of cerebrovascular disease, the number of people suffering from the disease is increasing day by day. Smoker’s disease is a cerebrovascular disease characterized by stenosis or occlusion of the end of the internal carotid artery and the appearance of an abnormal vascular network at the base of the brain. These small compensatory dilated vessels look like a cloud of smoke on cerebral angiography, hence the name. What are the health risks of smog? The detection rate of smog is increasing due to the widespread use of non-invasive imaging techniques. What are the risks to the body if one has smog? When patients have mild symptoms, they are prone to cerebral ischemic events, such as transient ischemic attacks that can occur and can lead to cerebral infarction. Clinical manifestations such as limb paralysis, language dysfunction, cognitive dysfunction, and sensory impairment of the limbs can also occur, causing a great impact on the patient’s life and seriously affecting the quality of life. For some patients with severe disease, it is easy to trigger brain hemorrhage, and the probability of such occurrence is still relatively high, and once brain hemorrhage occurs, it can sometimes be disabling or fatal. Therefore, the impact of smog disease on patients is very great. How is smog surgery treated? Most doctors still prefer surgery in the treatment view of smog. Combined vascular bypass is a composite procedure that combines direct bypass and patching together in the same surgery to achieve the desired treatment outcome. So, is smog bypass surgery risky? The combined vascular bypass surgery currently carried out in the clinic is very effective in improving the blood supply through direct bypass and at the same time, multi-factor patching is applied to the brain surface to induce the formation of neovascularization and improve the brain blood supply on a larger scale.