June 14, 2020 is the17th World Blood Donor Day. This year's theme is "Safe blood saves lives" and the slogan is "Blood donation makes the world healthier". Scientific research and long-term practice at home and abroad have proved that regular and appropriate blood donation not only does not harm physical health, but also can gain joy and sublimation of life after helping others and promote mental health. In addition, according to the "Blood Donation Law" and local regulations, blood donors also have the right to use blood free of charge and with priority. It can be said that blood donation without compensation is a good deed and charity that benefits the country and the people and benefits others. The whole society should vigorously carry forward the dedication of voluntary blood donation to help each other, convey love and social positive energy, let more healthy citizens of school age join the voluntary blood donation team, give warm blood and save others' lives.