Cerebral white is central nervous system leukemia, a lesion caused by leukemia cells infiltrating brain tissue, and is often the source of leukemia relapse. Patients with cerebral white, generally after treatment, about half of the patients can be cured. The survival period of patients is related to the type of leukemia they have, and in the case of cerebral white arising from acute promyelocytic leukemia, after treatment, the survival period of most patients is no different from that of normal people. However, in the case of cerebral white caused by acute lymphoblastic leukemia, although about half of the patients can be cured, the relapse rate is high and most patients have a survival period of about 2-2.5 years.