How long a patient with smog can live is mainly related to the condition, age of onset, as well as the clinical manifestations at the time of onset and the size of the lesion, and cannot be generalized. If a child has smog disease, the infarctive manifestations are the main cause. If the treatment is timely, the patient’s survival is usually not affected and the patient can survive for a long time. In adults with smoldering disease, the onset of the disease is dominated by cerebral hemorrhage or epilepsy, and survival depends on the amount of bleeding, the location of the bleeding, and the impact on important neurological functions. If the amount of bleeding is small and treatment is timely, the prognosis is usually good and long-term survival is possible, such as survival of 20-30 years or even longer. If the bleeding is large and the treatment is poor, death can occur within a short period of time. Therefore, patients with smog disease need to actively cooperate with doctors for treatment and should take good care of their lives in general, avoiding overexertion as well as heavy exercise. The diet should be as light as possible and avoid high salt diet.