Leukemia is not a hereditary disease and will not be inherited, let alone passed on from generation to generation, because the cause of leukemia has nothing to do with heredity. Currently, the occurrence of leukemia is related to the following factors: i. Physical factors, commonly found after exposure to various radioactive substances, such as radionuclides, X-rays, etc., can induce the occurrence of acute leukemia. ii. Second, chemical factors, such as long-term exposure to toxic gases, such as formaldehyde, benzene, paint, etc., may damage the patient’s DNA, inducing the occurrence of leukemia. Third, genetic factors, although leukemia is not a hereditary disease, but leukemia has obvious family phenomenon, that is, in a family successively have different people have leukemia. If a monozygotic patient has leukemia, the incidence rate of another person is about 20%. Therefore, leukemia is not a hereditary disease, and will not be passed on from generation to generation, but there is a certain genetic factor in it.