Myeloid leukemia is divided into acute myeloid leukemia and chronic myeloid leukemia. Acute myeloid leukemia has a very high clinical cure rate due to the use of trans-retinoic acid and arsenic in M3. Other acute myeloid leukemias and chronic myeloid leukemias can also prolong survival after active treatment. At present, AML is clinically divided into eight types, from M0 to M7, but among all the types, only M3 has the best treatment effect, which can reach more than 90%. This is because there are clinically effective drugs for M3, i.e., retinoic acid, suberic acid and so on. For other types of leukemia, there are no specific drugs, and the conventional treatment is chemotherapy and hematopoietic stem cell transplantation. Chemotherapy can only achieve clinical remission, and it is difficult to completely cure myeloid leukemia. Hematopoietic stem cell transplantation may cure myeloid leukemia, but there are strict indications.