People will be in a state of anemia after blood donation. In this case, the diet should be properly adjusted and the foods that cannot be eaten are as follows: 1. Patients after blood donation should not eat spicy and stimulating foods, such as chili, ginger and garlic; 2. Do not drink strong tea, coffee and other stimulating drinks, and do not drink alcohol. After blood donation, patients should enhance nutrition appropriately by eating more foods rich in high quality protein, such as lean meat, dairy and soy products. It is also necessary to eat more iron-rich foods, such as black fungus, nori, beans, dates, sesame, and animal liver. These foods are rich in iron and can replenish the iron needed by the body for hematopoiesis. Patients also need to eat more fresh vegetables and fruits to replenish vitamins as well as trace elements to promote iron absorption. Proper nutrition can promote human blood production. After blood donation, pay attention to rest, avoid participating in strenuous sports to avoid staying up late, and also pay attention to cold and warmth to prevent colds.