Through angiography, people are fascinated to see a dreamy ink painting, but they do not know that this is a serious and rare cerebrovascular disease called “smog disease”. Smoker’s disease is a disease of cerebral hemorrhage or cerebral ischemia caused by stenosis of the end of the internal carotid artery, occlusion and abnormal vasodilatation network at the base of the brain, and the most common danger to people is recurrent transient paralysis or weakness, mostly on one side, but some patients have persistent paralysis, aphasia and even cerebral hemorrhage. Since the cause of the disease is still unclear and its progression is unpredictable, some patients may recover spontaneously due to improvement of cerebral ischemia by getting enough blood supply from the lateral branches. However, other patients have irreversible neurological dysfunction due to loss of compensation, so both conditions should be taken into account in clinical treatment. The first is mainly symptomatic treatment. For ischemic onset, vasodilators and anticoagulants can be applied. For patients with cerebral hemorrhage apply hemostatic drugs and antifibrinolytics, etc. For patients with epilepsy and involuntary movements it is appropriate to do the corresponding symptomatic treatment. Patients with cerebral hemorrhage with intracranial hypertension should have appropriate control of intracranial pressure. These operations can only play a role in relieving the patient’s condition, and have little effect on the treatment of the disease. Secondly, before irreversible neurological dysfunction occurs in brain tissue, the lateral branch circulation of the brain is increased through surgical methods to improve the blood supply to the brain and restore normal neurological function. If a patient has mild smog, is it treatable? Can it be treated through surgery? At present, some large cerebrovascular disease hospitals in Beijing carry out “combined vascular bypass” treatment. Combined vascular bypass surgery is a complex surgery, which can rapidly establish blood flow side branch channels through direct bypass to improve local blood supply to the brain, and at the same time carry out indirect bypass to induce the formation of new blood vessels in a larger area. The indirect bypass is performed at the same time to induce the formation of new blood vessels in a larger area and improve the blood supply to the brain on a larger scale. By combining the advantages of both procedures and performing them on the same table, it shortens the operation time and increases the efficiency of the operation, which has become the best choice for the treatment of smog.