Some patients have a fluke mentality when they get smoke disease. Recently, hospital experts met such a patient when they saw him and asked, “Is there any example of self-healing of smoke disease before seeing a doctor? Smog is a group of cerebrovascular diseases characterized by narrowing or occlusion of the siphon of the internal carotid artery and the beginning of the anterior and middle cerebral arteries, and the presence of an abnormal network of small vessels at the base of the brain. With smog, the main common symptom in patients is cerebral ischemia; therefore, most patients show focal neurological deficits, such as dysarthria, aphasia, and hemiparesis. In addition, a small number of patients may present with ischemia-related symptoms such as syncope, mild paraplegia, visual symptoms, or the development of involuntary movements. Some patients may even develop mental impairment due to frontal lobe ischemia and infarction, and some patients may develop cognitive impairment (near event amnesia, irritability or anxiety, etc.). Smog is a developmental disease, and if no treatment is taken, the disease will become more and more serious and may pose a threat to the patient’s life, so smog should be treated as soon as possible. Currently, surgery is effective in treating smog, and patients can choose “combined vascular bypass” surgery. Unlike traditional surgical bypass surgery, combined bypass surgery directly bypasses the superficial temporal artery and the middle cerebral artery, and affixes the dura mater, temporalis muscle, artery and frontal cranial periosteum to maximize the surgical effect of smog.