In this life, we want to be healthy and safe, because only when we are healthy can we enjoy life better. However, there are too many diseases that pose a great threat to human health, and one of them is smog disease, which is a serious disease that many patients are diagnosed with without knowing it. What exactly is smog disease? In fact, this is a kind of cerebrovascular disease, mainly patients with cerebral arterial ring bilaterally the main branches of the blood vessels appeared stenosis or occlusion of the phenomenon, which in turn led to some small abnormal vascular hyperplasia, which will affect the patient’s blood supply to the brain, and do not treat the control in time more disability and the possibility of death. From the medical point of view, smog disease is also a kind of cerebrovascular malformation, its course is chronic progressive development, even if the patient does not have any obvious discomfort at the initial stage, but also need to be closely observed, if the symptoms appear should be actively treated to avoid aggravation of the condition and deterioration. Currently, many primary hospitals can only rely on conservative medication for the treatment of smog disease. Unfortunately, there is no specific medicine for smog disease, and the aim of the treatment is to improve the blood supply to the brain, which is why it has to be treated by surgical means. Why do I need a second surgery for smog disease? The reason for a second surgery is that in most cases, the disease is bilateral, with malformations of the blood vessels on both sides of the brain, so the more severe side of the brain has to be treated first, and then the other side of the brain is scheduled for surgery when the disease has stabilized.