There are many causes of anemia in the elderly, including malnutrition, excessive blood loss, malignant blood system diseases, etc. Its treatment includes causative treatment and targeted treatment. 1. Malnutrition: malnutrition is easily caused by the decline of gastrointestinal function in elderly patients. Prolonged malnutrition will cause anemia, such as iron deficiency anemia for elderly patients can be supplemented with iron supplements such as ferrous sulfate. If it is caused by chronic gastritis and other diseases, first of all, you can take medication to treat the original disease such as omeprazole, amoxicillin and so on. 2. Excessive blood loss: such as the elderly gastric ulcer, duodenal ulcer, hemorrhoids, etc., due to chronic bleeding, over time will cause anemia. (1) gastric ulcer, duodenal ulcer: gastric ulcer can take omeprazole, amoxicillin, aluminum thioglycollate and other drugs. Duodenal ulcer can be applied to famotidine, omeprazole, clindamycin, aluminum phosphate and other drugs. For patients with black stools can apply Yunnan Baiyao and so on. If necessary, minimally invasive surgery can be taken to stop bleeding. (2) Hemorrhoids: Elderly patients suffering from this type of disease may cut their hemorrhoids every time they have a bowel movement, causing bleeding. Treatment includes local medication (e.g. hemorrhoidal suppository), surgical treatment (e.g. thrombosed hemorrhoidal stripping operation) and so on. 3. Malignant hematologic diseases: including acute myeloid leukemia, myelodysplastic syndrome, acute lymphoblastic leukemia, etc., which require different treatments depending on the cause. For example, patients with acute myeloid leukemia should be treated with chemotherapy with drugs such as cytarabine and Zoerythromycin. In addition, there are many other diseases that cause anemia in the elderly, such as digestive tract tumors, etc. The symptoms of anemia should be actively treated on the basis of treating the primary disease. If the above symptoms occur, you should go to the hospital in time to find out the cause of the disease, and carry out regular treatment under the guidance of the doctor. The above drugs should be applied under the guidance of doctors and pharmacists to avoid adverse reactions.