The Blood Donation Law of the People’s Republic of China provides that healthy citizens between the ages of eighteen and fifty-five are encouraged to donate blood voluntarily. Blood donation is a noble act based on altruism, in which a healthy person donates an appropriate amount of blood to save the lives of others, and is also a civilized expression of love and mutual support between people, the value of which cannot be measured in monetary terms. The value of blood donation cannot be measured in monetary terms. It is an act of great merit that not only saves the lives of others at critical moments, but also has many benefits for the donors themselves. In this article, we will focus on the “self benefits” of blood donation. 1. Regular blood donation is harmless Some people worry that donating blood may cause damage to the body, but this is not necessary. An adult’s total body blood volume is equivalent to about 8% of body weight, and only 80% of the blood is normally circulating, while 20% (about 800 ml) is stored in “small blood banks” such as the liver, spleen and skin. After donating blood, the blood from the “small blood bank” is quickly released into the circulation. The human blood can be renewed at least once every 120 days, therefore, the hematopoietic and circulatory systems have sufficient compensatory functions and regular blood donation will not affect health. 2, moderate blood donation is beneficial to the body Scientific studies have shown that moderate blood donation has at least five benefits to human health. (1) Reduce blood viscosity. Long-term moderate blood donation, especially single donation of red blood cells and platelets and other tangible components, can significantly reduce blood viscosity, speed up blood flow, cerebral blood flow, thereby alleviating or preventing hyperviscosity. (2) Reduce the risk of cardiovascular disease. Studies have shown that the proportion of people who have donated blood suffering from coronary heart disease after 5 years is 86% less than that of those who have not donated blood; the chance of acute myocardial infarction in blood donors is significantly lower compared with those who have not donated blood in the same period; the risk of cardiovascular disease in blood donors is only 1/2 that of those who have not donated blood in 3 years. (3) Reduce the incidence of cancer. Evidence shows that if the iron level in the body exceeds 10% of the normal value, the chances of developing cancer increase. Men who donate blood regularly and in moderation can lower their iron levels and thus reduce the risk of cancer. Women lose a certain amount of iron due to blood loss during the menstrual cycle, so no significant relationship has been found between iron levels and cancer development in women. (4) Pleasant to the body and mind. Donating blood is a noble act of saving a life. While helping people and doing good to them, it also purifies your spirit, comforts your soul and makes your work and life more fulfilling. (5) Prolonging life. Foreign studies show that the average life expectancy of blood donors is higher than that of non-donors. 3. Rewards for blood donation (1) Free blood. The implementation of the Blood Donation Law of the People’s Republic of China in Zhejiang Province stipulates that if a blood donor donates 400 ml or more of whole blood, he or she shall be exempted from paying clinical blood fees for life; if less than 400 ml, he or she shall be exempted from paying clinical blood fees for five years from the date of donation in accordance with five times the amount of blood donated, and after five years, he or she shall be exempted from paying clinical blood fees for the same amount of blood donated; immediate family members shall be exempted from paying clinical blood fees for five years in accordance with twice the amount of blood donated. Immediate family members shall be exempted from paying clinical blood consumption fees for five years, and after five years, they shall be exempted from paying clinical blood consumption fees for the same amount of blood donated; for those who are awarded the prize for blood donation, their siblings, grandparents and spouse’s parents shall also be treated as immediate family members. (2) Priority blood use. In times of blood shortage, the donor himself/herself (including immediate family members) and mutual donors have the right to use blood on a priority basis, in addition to rescuing patients. (3) Many benefits. Zhejiang Province offers other preferential policies to blood donors who have won the National Blood Donation Dedication Award (4,000ml or more), including free visits to government-invested parks and tourist scenic spots in the province with a blood donation honor card, free general outpatient registration fees for visits to non-profit medical institutions, and free rides on urban public transportation. (4) Receiving honors. China’s “Blood Donation Recognition and Rewards” has established the “Blood Donation Dedication Award”, “Blood Donation Promotion Award”, and “Blood Donation Volunteer Service Award”, which give honorary and material rewards respectively. Recognition and material rewards.