Many people are afraid of smog because it is a cerebrovascular disease characterized by an abnormal network of small blood vessels in the skull due to the narrowing or occlusion of major blood vessels in the human brain. The danger of smog is not to be underestimated, and it is mainly reflected in two aspects of cerebral ischemia and hemorrhage, and timely treatment is crucial after detection. Smoke disease is a progressive disease, after getting smoke disease, some patients will have ischemic symptoms in the brain, manifesting as dizziness, headache, weakness of hands and feet, memory loss, and in serious cases, aphasia and acute hemiparesis. Of course, some patients will also experience intracerebral hemorrhage, because the abnormal intracranial vascular network is very fragile and prone to rupture. When rupture occurs, it can lead to cerebral hemorrhage with serious consequences, sometimes even life-threatening. Some patients who develop brain hemorrhage and realize the danger will want to undergo bypass surgery for smog as soon as possible. So, how soon after a brain hemorrhage in smog can you have bypass surgery? After a brain hemorrhage occurs in a smoky patient, bypass surgery cannot be done immediately to treat smoky disease, and the specific surgery time can only be decided according to the condition. Of course, if the patient is in good health before the brain hemorrhage and recovers quickly, the surgery can be performed earlier on the advice of the doctor. Combined vascular bypass surgery is the best way to treat smog. This surgery is a compound procedure of direct bypass + indirect patching, which combines the advantages of direct bypass and indirect patching, effectively improving the speed and scope of blood supply, rapidly improving cerebral ischemia, restoring blood flow, and reducing the chance of cerebral hemorrhage.