Acute lymphoblastic leukemia is the most common disease in children, and the cure rate for the standard-risk group in children is high, reaching over 70%-80%, and adults are now mimicking some of the treatment options for children. The treatment plan is as follows: 1) induction of remission, induction of remission is usually done with VDCP, plus induction of remission with menadione enzymes, to achieve less than 10^9 tumor cells, and then remission is achieved by doing bone aspiration to see the cytology; 2) consolidation and intensification is the later stage, after remission is achieved, it is not the end of treatment, but still needs consolidation, otherwise the residual tumor cells will come back. The later stage is maintenance therapy, but for adults, there is generally no low-risk group, because the prognosis for adults is slightly worse, but the standard and high-risk groups, and the relapse rate of acute gonorrhea is relatively high, higher than that of acute myeloid leukemia. Therefore, allogeneic stem cell transplantation is an option for patients in this high-risk group. If relapse occurs after chemotherapy for the primary disease or after allogeneic stem cell transplantation, the treatment after relapse can be chosen from the treatment of cart therapy. The first case of cart treatment in the United States, Emily has survived for several years now, which is a relatively successful case of cart. Acute lymphocytic leukemia, it is easy to infiltrate into the center, this time we should pay attention to intrathecal injection to prevent central infiltration, commonly known as prevention of brain white.