The general recurrence rate of acute childhood leukemia may be 10 to 20 percent. Acute lymphoblastic leukemia is a common type of childhood leukemia and belongs to the category of leukemia that has the best treatment outcome. With chemotherapy, about 95% of children can achieve remission, and more than 80% of children can survive for a long time. Therefore, children have a relatively high chance of survival and a relatively low chance of relapse. If the relapse is early, some patients can achieve remission through chemotherapy again, if the relapse is long, that is, more than 36 months after the onset of the disease, again chemotherapy can achieve good results, other cases may need to achieve remission through hematopoietic stem cell transplantation. In general, the child should be allowed to rest more and eat more food rich in nutrients. Regular checkups are necessary.