Patients must pay attention to take better care of their body after donating blood so as to prevent the occurrence of anemia. Firstly, it is recommended that patients drink a glass of brown sugar water after blood donation to help relieve the weakness of the body. Secondly, patients can take some iron chelators after blood donation to help replenish iron and promote the production of blood cells. Foods such as red dates and cinnamon have the effect of replenishing blood and benefiting qi, and can be used appropriately to maintain the patient’s health. After blood donation, you must pay attention to actively rest in bed, do not overexert yourself and do not perform heavy physical labor.