Male anemia is defined as hemoglobin <120g/L in adult males and requires supplementation with iron, folic acid, or vitamin B12 depending on the cause of the anemia, and may be treated with blood transfusions if necessary. The causes of anemia can be found in iron deficiency anemia, megaloblastic anemia, aplastic anemia, hemolytic disease and leukemia. 1. Iron deficiency anemia: for example, iron absorption will be reduced after gastric resection, chronic gastrointestinal blood loss will cause excessive iron loss, etc. This kind of anemia will be caused, and the main treatment is to remove the cause of the disease and iron supplementation treatment. For example, if there is a tumor or ulcer in the digestive tract, surgery will be performed; iron supplementation includes organic iron (ferrous gluconate, ferrous fumarate, etc.) and inorganic iron (ferrous sulfate on behalf of the two categories), and oral iron is preferred. 2. Megaloblastic anemia: mainly caused by the lack of folic acid and (or) vitamin B12, the treatment is also for the original disease (such as gastrointestinal diseases, autoimmune diseases) and supplementation of folic acid and vitamin B12 and other targeted treatment. 3. Aplastic anemia: (1) Prevention of infection: pay attention to diet and environment. (2) Targeted treatment: correct anemia, if necessary, blood transfusion; give phenol sulfacetamide to stop bleeding and control bleeding. (3) Promote hematopoiesis: give androgens (danazol, etc.) or hematopoietic growth factors (erythropoietin, etc.). (4) Hematopoietic stem cell transplantation. 4. Hemolytic anemia: according to the cause of hemolysis, glucocorticoids (prednisone) and other treatments should be taken. 5. Leukemia: such as acute myeloid leukemia needs to be chemotherapy with drugs such as cytarabine. When anemia occurs, attention should be drawn to it, and the patient should be referred to the local hospital to complete laboratory tests, clarify the cause of the disease under the guidance of the physician, and receive standardized treatment.