“Although the incidence of smog is not particularly high, once it develops, it is very dangerous. It often leads to cerebral hemorrhage or cerebral ischemia, which can be very disabling and can seriously cause patients to lose their lives. Smog is not self-healing, and once it is detected, treatment should be taken as soon as possible to avoid greater harm. Smoke disease is a cerebrovascular disease characterized by a slow thickening of the intima of the arteries at the end of the cerebral artery ring and the beginning of the anterior and middle cerebral arteries, a gradual narrowing of the arterial lumen and even occlusion, followed by the emergence of a network of small vessels with abnormal side branches. It is characterized by recurrent transient paralysis or weakness, mostly hemiparesis, but also alternating right and left hemiparesis or double hemiparesis. Very few cases are accompanied by hemiplegic attacks, headache or migraine. Rarely, there is transient sensory impairment, involuntary movement or mental retardation. If you have smog, is it better to treat it conservatively or surgically? If you have smog, you can only take oral medication to control the symptoms. From a therapeutic point of view, drugs that mainly dilate blood vessels cannot stop the progressive narrowing and even occlusion of cerebral arteries, and long-term use of such drugs can cause damage to the patient’s liver function. For the surgical treatment of smog, Jin Yongjian’s team at the Department of Neurosurgery for Cerebrovascular Diseases of Beijing Aviation General Hospital carries out “combined vascular bypass surgery”, which starts from the root cause of smog and rapidly establishes blood flow collateral channels through direct bypass to improve local blood supply to the brain, and at the same time carries out indirect bypass, that is, multi-factor patching, to induce the formation of new blood vessels in a larger area. The indirect bypass surgery, also known as multi-factor patching, can induce the formation of new blood vessels in a larger area and improve the blood supply to the brain to a greater extent, which does not bring damage to the patient’s body and can rehabilitate smog, making the combined vascular bypass surgery an effective treatment for smog at present.