Our country advocates free blood donation, which is also one of the obligations of every healthy citizen in our country. After donating blood, first of all, girls should pay attention to rest, because compared with boys, girls’ weight is on the low side, and at the same time, there is the situation of physiological cycle, after donating blood, the physical strength will decline more obviously. Therefore, after donating blood, girls must pay attention to rest, avoid engaging in strenuous exercise, and preferably rest in bed. Secondly, after donating blood, we should pay attention to nutritional supplementation, and replenish more water, because after donating blood, the human body will also lose part of the plasma. At the same time, you should also eat more food rich in iron, such as pig’s blood, sheep’s blood, pig’s liver, purple cabbage, black fungus, shiitake mushrooms and so on. Also, eat more high-quality proteins, such as fresh beef, mutton, eggs, and soy products.