The treatment of leukemia in the elderly consists of general therapy and drug therapy. The treatment of leukemia in the elderly is that the doctor chooses general treatment and drug treatment according to the stage and clinical characteristics of the patient. 1. General treatment: anti-infection treatment (levofloxacin) is given when there is infection, blood product transfusion is given when there is anemia to correct anemia, and nutrition is given when there is functional disorder. 2. Drug therapy: mainly target drugs and immunosuppressants. According to the type of leukemia, radiotherapy program should be selected. Drugs include Vinacrine, Azacitidine, Cytarabine, etc. Leukemia refers to heterogeneous malignant clonal disease, which belongs to the malignant tumor of hematopoietic system caused by mutation of early hematopoietic precursor cells. The main pathological feature is the massive proliferation of leukemia cells in bone marrow and other hematopoietic tissues, which inhibits normal hematopoietic function and thus reduces the production of blood cells and manifests corresponding clinical symptoms. Once leukemia is diagnosed in the elderly, they should go to the hospital in time and be given standardized treatment as early as possible under the guidance of physicians.