• Age ≥ 60 years and ≤ 75 years, regardless of gender; 2.Diagnosed with AML (acute myeloid leukemia) according to WHO criteria (non-acute promyelocytic leukemia); 3.Risk stratification as intermediate or high risk based on the ELN (2022) guidelines; 4.Expected survival time ≥ 3 months; 5.Not suitable for allogeneic hematopoietic stem cell transplantation; 6.AML patients who achieve remission with morphologic assessment of bone marrow showing no leukemic involvement after induction therapy; 7.Eastern Cooperative Oncology Group Performance Status (ECOG-PS) score of 0-2; 8.Meeting the following laboratory requirements (performed within 7 days prior to treatment):

⁃ Total bilirubin ≤ 1.5 times the upper limit of normal for the same age group;

⁃ AST and ALT ≤ 2.5 times the upper limit of normal for the same age group;

⁃ Serum creatinine \< 2 times the upper limit of normal for the same age group;

⁃ Cardiac ejection fraction within normal limits as determined by echocardiogram. 9.Able to comply with the study visit schedule and understand and adhere to all trial protocol requirements; 10.Able to take oral medications.