The minimum hospitalization for anemia transfusion is 1-2 days, and it may take about a week if more. The treatment of anemia is divided into allopathic treatment and symptomatic treatment. In patients with mild to moderate anemia, blood transfusion is not required, and the indication for blood transfusion is only when the hemoglobin is less than 60g/L. Moreover, blood transfusion is only a means of symptomatic treatment, and the complete treatment of anemia still requires allopathic treatment. The most common type of anemia in China is iron deficiency anemia, and the treatment for patients with iron deficiency anemia is to solve the cause of iron deficiency on the one hand, and to replenish the iron in the body on the other. The commonly used iron supplement is ferrous succinate, which needs to be given orally for 3-6 months. The length of hospitalization is related to the degree of the patient’s own condition and the condition of other underlying diseases combined. After one transfusion, the patient needs to be observed for 1-2 days and can be discharged if the symptoms improve. However, if the patient is in poor physical condition and needs repeated transfusions, the length of hospitalization for the transfusion will be extended.