Most ordinary people may not know about smog, but those who do know about smog should know that the two main dangers of smog are cerebral ischemia and cerebral hemorrhage. Many people will wonder how smog can bleed. Smoke disease is a rare cerebrovascular disease, it is firstly, the narrowing or occlusion of the main arteries of the brain, there may be the end of the internal carotid artery, the anterior cerebral artery, the middle cerebral artery, and sometimes even the posterior cerebral artery, all of which may be narrowed or occluded, which will certainly lead to cerebral ischemia, and in serious cases, cerebral infarction; secondly, the secondary formation of abnormal vascular network at the base of the skull, shaped like smoke, also known as smoke vessels These smoky vessels are very thin and fragile, and can easily rupture, causing bleeding. To treat smog, we start from these two aspects, build another blood flow channel, improve brain blood supply and prevent brain hemorrhage, so as to achieve the purpose of treatment.