Smoke disease is a disease characterized by slow intimal thickening of the end of the internal carotid artery and the beginning of the anterior and middle cerebral arteries, gradual narrowing and even occlusion of the arterial lumen, and compensatory dilation of the penetrating arteries at the base of the brain. The pattern of dilated vessels in the imaging is like the curl of smoke in a chimney, so it is called smoke disease. It is divided into two types. I. Transient ischemic attack and ischemic stroke 1. Patients can usually present with ischemia in the area supplied by the internal carotid artery. Therefore, most patients present with 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 involuntary movements. 3.Some pediatric patients may develop mental impairment due to frontal lobe ischemia and infarction, and some patients may develop cognitive impairment (near event amnesia, irritability or anxiety, etc.). Second, intracranial hemorrhage 1, adult patients are often dominated by hemorrhagic symptoms, and the rebleeding rate in patients with smog is as high as 28.3%-33%, with an annual rebleeding rate of 7.09%. 2, hemorrhage can often bring serious neurological impairment to patients, manifested by different degrees of intelligence loss, sensory loss, dysphonia, migraine, headache, etc. Smoke disease is a serious hazard that should not be taken lightly: 1. Smoke disease is so harmful that it has become the second most deadly disease after myocardial infarction. If treatment is delayed, once a cerebral hemorrhage or cerebral infarction occurs, it may lead to hemiplegia, disability, and in severe cases, life threatening. Smoke disease is hereditary and will be passed on to offspring if one parent has the disease; 3. Smoke disease may be accompanied by diseases including renal artery stenosis hypertension, intracranial aneurysm, cerebrovascular malformation, and periodic oblique neck. The most common methods of treating smog are drugs and surgical bypass surgery, but drugs, as a temporary control method, do not effectively remove the root of the disease; single surgical bypass surgery, which is very inconsistent, takes 3 to 4 months after surgery to form bypass vessels, and there is still a risk of stroke during these 3 to 4 months, with a high mortality rate. The new combined vascular bypass surgery – an innovative technology for the treatment of smog in China – combined vascular bypass surgery is different from the traditional surgical vascular bypass surgery: this surgery directly bypasses the superficial temporal artery and the middle cerebral artery, and places the dura mater, temporalis muscle, artery and frontal skull These elements of the periosteum are affixed to maximize the surgical results of smog! Smog is a huge hazard, and proper prevention and treatment are necessary to eliminate the dangers of smog. In addition, it is important to always keep an eye on whether you have symptoms like smog, and if you find them, do not miss the time to treat them.