Inclusion Criteria:  Chinese guidelines for the diagnosis and treatment of acute myeloid leukemia (2017 edition)，excludes acute promyelocytic leukemia (M3、APL) and myelodysplastic syndromes(2017 edition) Be at least 18 years of age on day of signing informed consent Not suitable for newly diagnosed patients with intensive chemotherapy Not suitable for newly diagnosed patients with receiving hematopoietic stem cell transplantation The proportion of blast cells was below 50% in bone marrow Total white blood cell (WBC) count ≤10,000/µL；Must be able to swallow tablets  Exclusion Criteria:  Malignant neoplasms with other progression Serious mental illness uncooperative Refusal to join the study