How long it takes to make up for anemia with infusion is mainly based on the cause of the anemia, the degree of anemia, the patient’s physical condition and other factors, there is no clear recovery time, and it usually varies from person to person. 1. If the patient is relatively mild benign anemia, such as iron deficiency anemia, megaloblastic anemia, etc., the patient can be given iron supplements, folic acid, vitamin B₁₂, together with the infusion treatment may be able to take effect in about a week, about a month can be restored to normal. 2. If the patient is due to aplastic anemia, acute leukemia and other causes of severe anemia, in general, the patient needs to be active treatment of the primary disease, this type of anemia recovery time may be relatively longer, usually half a year or more than half a year to recover. Drugs include cytarabine, Zoerythromycin and so on. 3. For anemia caused by bone marrow hematopoietic failure, spleen function decline, etc., it is usually difficult to recover from infusion therapy, and patients can undergo surgery after professional doctor’s diagnosis and treatment. It is recommended that patients strictly follow the doctor’s instructions for medication, actively cooperate with the doctor’s treatment, pay attention to monitoring the condition in life, and consult the doctor in time if there is any abnormality.