In terms of medicine, there is no absolute best and fastest way to replenish blood, the fastest way to replenish blood in severe anemia is blood transfusion, but the scope of application is small. It is recommended that the patient’s anemia according to the cause of targeted treatment and conditioning, treatment options include drug therapy. 1. Iron deficiency anemia: it is a common type of anemia, which is related to insufficient iron intake, absorption disorder or chronic bleeding disorder. It is recommended that patients actively treat the primary disease under the guidance of doctors and correct it by iron supplementation. It is recommended to increase the intake of iron-rich foods, such as animal blood, animal liver and lean meat. 2. Megaloblastic anemia: If the anemia is caused by vitamin B12 deficiency, it is recommended to improve the symptoms by supplementing vitamin B12 and increase the intake of fresh vegetables. 3. Immune hemolytic anemia: It is recommended that patients be treated with glucocorticoids under the guidance of doctors. 4. Hereditary thalassemia: patients can be treated according to the doctor’s suggestion, and bone marrow transplantation can be carried out if the condition is serious. Patients should note that anemia is not the final diagnosis of the disease, but rather a symptom of other diseases as well as manifestations, and the doctor should target treatment according to the specific cause of the patient’s anemia. Patients should also cooperate with the doctor, follow the doctor’s instructions, do not take drugs without authorization, to avoid improper use of drugs.