Causes of moderate anemia include anemia caused by poor hematopoiesis, hemolytic anemia, etc. Treatments include medication and surgery. 1. Anemia caused by abnormal hematopoietic function: (1) Iron-deficiency anemia: it is mainly caused by the insufficient supply of iron in the body, resulting in an anemia caused by the obstacle of erythropoiesis. Treatment includes etiological treatment (e.g. peptic ulcer patients should be treated with omeprazole for acid suppression and protection of gastric mucosa), drug treatment (e.g. ferrous gluconate, ferrous fumarate, ferric sorbitol, etc.). (2) Megaloblastic anemia: anemia caused by folic acid and/or vitamin B12 deficiency. The main treatment method is to supplement folic acid and/or vitamin B12. (3) Aplastic anemia: it can be treated with drugs such as cyclosporine and anti-human thymoglobulin. (4) Leukemia: such as acute myeloid leukemia can be treated with cytarabine, zorubicin and other drugs. 2. Hemolytic anemia: it is caused by accelerated destruction of red blood cells. Treatment includes drug therapy (glucocorticoid such as dexamethasone, immunosuppressant such as cyclophosphamide, etc.), blood transfusion therapy, splenectomy, and so on. In addition to the above causes, diseases such as hemorrhagic anemia and hereditary spherocytosis can also cause moderate anemia, and different treatments should be taken depending on the condition in order to quickly bring the anemia symptoms back to normal. If the above symptoms occur, it is recommended to go to the hospital in time to find out the cause of the disease and carry out targeted treatment under the guidance of the doctor. The above drugs should be applied under the guidance of a doctor to avoid adverse reactions.