Red cell suspension infusion is a common treatment method for patients with anemia in clinical practice. China’s blood transfusion management method stipulates that red cell suspension, within 30 minutes of leaving the special storage refrigerator, begins to be infused, and 1 unit of red cell suspension is generally required to be finished within 2 hours of infusion. If the patient’s physical condition is acceptable and his heart function is normal, the transfusion can also be completed within 40-60 minutes. This is because transfusion, like transfusion, can affect the effectiveness and safety of the transfusion if it takes too long, because once the blood leaves the correct storage conditions, there is a risk of bacterial multiplication or loss of function and the patient will have a transfusion reaction. Therefore, the duration of blood transfusion should be limited. Only with the correct timing of blood transfusion can we better serve our patients.