”Smog is a relatively unknown disease, its incidence is low, the danger is great, and in serious cases, the patient’s life threatened, so we should pay attention to this disease. How long does it take for a smog attack to occur? There is no specific time period for the onset of smog, some patients have been ill for many years without onset, some patients will suddenly onset without symptoms, no matter patients have early onset or late onset, we should pay attention to smog, to avoid smog to bring more harm to patients. Smoke disease is a cerebrovascular disease, mainly manifested as unilateral or bilateral narrowing or occlusion of the distal middle cerebral artery and proximal anterior cerebral artery of the internal carotid artery with smoky, fine vessel formation at the base of the brain and soft meninges. Clinical manifestations mainly include cerebral ischemia and cerebral hemorrhage, etc. If patients develop these two types of symptoms and do not take treatment measures, patients may develop different degrees of hemiparesis or successive paralysis on the left and right sides, which may be accompanied by aphasia, choking on water, difficulty in swallowing, diminished intelligence, dementia, seizures, headache and other symptoms. If the patient does not take treatment measures, the patient’s condition will become more and more serious, and even make the patient lose his life as a result, so the patient should take treatment measures as soon as possible after finding out that he has smog. After years of clinical evolution, smog surgery is no longer limited to the traditional bypass and patching procedures. Based on the advantages and drawbacks of bypass and patching, the mainstream treatment is now combined vascular bypass, which is effective in treating smog and has been proven in a large number of cases (currently the minimum age is 2.5 years). The patient’s symptoms of cerebral ischemia were improved immediately after surgery, and the headache and dizziness and weakness of the limbs that the patient experienced after surgery gradually disappeared. In addition, the addition of multi-factor patching to the surgery was able to expand the scope of the surgery and avoid the recurrence of cerebral ischemia.