Smog is a progressive, developmental disease, so smog does not heal on its own. If left untreated, smog will gradually develop and worsen. What is the best time to administer treatment for smog? When is the best time to treat smog? In general, there are two stages of the disease: childhood and adulthood. The other peak is the adult population of about 40 years old. The onset of the disease is different for each group. In children, they are more likely to have a brain attack. For example, once ischemic symptoms are detected in children. If the ischemia is severe or long-term, it may lead to dementia or mental decline. For example, if a child is 5 years old and found to have smog, if left untreated, the child may be dumb by the age of 7 or 8. Therefore, once a child is found to have smog, early surgery is the right choice. In the case of adults, they may have either a brain infarction or a brain hemorrhage before they come to the hospital, and are seldom detected by physical examination. Therefore, in the case of a smoky patient with cerebral infarction, it is generally recommended to treat the cerebral infarction first, and after two to three weeks, it is possible to do a combined cerebrovascular bypass surgery. What is generally recommended for patients with cerebral hemorrhage, according to the sequelae of cerebral hemorrhage, if he is a vegetable, then I think there is no need to do smoke treatment surgery. However, if he is able to take care of himself through the treatment of cerebral hemorrhage, it is generally recommended that two or three months after the hemorrhage, he can undergo combined cerebrovascular bypass surgery. This is such an opportune time for treatment.