There are many causes of anemia in babies, such as nutritional anemia, malignant diseases of the blood system, etc. It is necessary to clarify the causes of anemia and then administer different medications according to the different causes of anemia. 1. Nutritional anemia: including iron deficiency anemia and megaloblastic anemia. If the baby has pale yellow skin, decreased appetite, etc., it is necessary to consider the possibility of anemia, and can improve the level of serum iron, ferritin, vitamin B12, folic acid, etc. If there is a lack of iron or lack of folic acid and vitamin B12, it can be prescribed to take iron supplements, such as ferrous sulphate, or supplemental vitamin B12 and folic acid. 2. Malignant diseases of the blood system: if the baby’s blood routine suggests the premise of anemia, at the same time there are white blood cells, platelet changes, if necessary, can improve the bone marrow aspiration, clear whether there is leukemia, aplastic anemia and other diseases, so as to use chemotherapy or hematopoietic stem cell transplantation and other treatments. There may be other causes of anemia in babies, such as anemia caused by blood loss, anemia caused by hereditary hemoglobinopathies, hemolytic anemia, etc. It is recommended that babies go to the hospital in time for medical consultation, and after completing the examination and clarifying the cause of the disease, they will be given targeted treatment to avoid delaying the condition. All of the above medications should be used under the guidance of a doctor, avoid self-medication.