There is no clear standard for the optimal time for bone marrow transplantation for acute leukemia m2, which is usually as soon as possible after complete remission of symptoms from the first chemotherapy treatment and as soon as the systemic condition permits. Acute leukemia m2 is a partially differentiated form of acute granulocytic leukemia, and the treatment varies according to age and risk stratification. Longer survival can be achieved if bone marrow transplantation with reduced-intensity preconditioning is feasible after remission in patients with a generalizable condition and a suitable donor. There is no clear standard for the optimal time for bone marrow transplantation, and factors such as the degree of disease and age may affect the timing of bone marrow transplantation. It is recommended to standardize the treatment under the guidance of the doctor, and if the family conditions allow, it is recommended to follow the doctor’s advice on when to carry out a bone marrow transplant.