Acute lymphoblastic leukemia (ALL) constitutes 75% of childhood leukemia and acute myeloblastic leukemia (AML) constitutes 20% of childhood leukemia.

• 其中急性淋巴细胞白血病(acute lymphoblastic leukemia，ALL)约占75%25，急性髓细胞性白血病(acute myeloblastic leukemia，AML)约占20%25。