M2 leukemia is an acute myeloid leukemia or acute non-lymphoblastic leukemia. There are 8 types of non-lymphoblastic leukemia, from M0-M7. M2 is the second of these types, called M2 type, which is subdivided into M2a and M2b. If diagnosed with M2 leukemia, treatment needs to follow the standard treatment protocol for acute myeloid leukemia. The details are as follows: 1. The first stage is to induce remission and chemotherapy with the standard regimen of 3+7; 2. The second stage is consolidation therapy, usually with medium to high doses of cytarabine; the third stage of maintenance therapy is to decide the maintenance regimen based on age, chromosomal abnormalities, and immunomolecular abnormalities; 3. Hematopoietic stem cell transplantation includes allogeneic hematopoietic transplantation, autologous hematopoietic transplantation, cord blood Bone marrow transplantation of umbilical cord blood can be used for complete treatment of leukemia according to different situations.