Bone marrow transplantation for acute myeloid leukemia generally requires the patient to be under 65 years of age, and the older the patient, the greater the impact on the outcome of the transplant. 1. Bone marrow transplantation is a fundamental treatment for leukemia, and generally younger patients will have a higher success rate and fewer postoperative complications. The older the patient, the worse the organ function, the higher the possibility of various complications after bone marrow transplantation. Generally speaking, allogeneic bone marrow transplantation is not recommended for patients over 65 years old. 2. However, with the development of medical technology, if the patient is in good health, under certain circumstances, patients over the age of 65 can also undergo the surgery, only that the success rate may be lower and there may be more complications. No matter how old the patient is, there are certain risks associated with bone marrow transplantation, and it is up to the doctor to make a comprehensive judgment based on the patient’s condition and physical condition as to whether or not he/she is suitable for bone marrow transplantation.