We are all caring people, and if one day we knew that our blood stem cells could save a young person’s life, I believe we would all be able to give our love without hesitation. Regardless of whether or not this act is harmful to the body. However, the donor also has the right to know what harm this act of donating blood stem cells can do to the body. The process of donating blood stem cells, which is commonly known as bone marrow donation, can be very frightening when you hear that it is a bone marrow donation, and it can be a bit frightening when you think of having to draw bone marrow, but in fact the process of donating bone marrow is not very painful, it is a simple collection of peripheral blood, drawing blood from the arm, passing it through a blood cell separator to separate the blood stem cells, and then the blood goes back from the other arm. The whole process takes about three hours. In simple terms, this blood stem cell donation is like blood donation, no harm to health, but can save the life of a leukemia patient, because the blood stem cells have a high degree of self-renewal and self-replication ability, after donating blood stem cells within 1-2 weeks, the various components of the blood can be restored to their original level, without any impact on the body. Many elderly people have the idea that donating bone marrow hurts the essence of blood. Human cells are being renewed every day, and donating blood stem cells is just losing some blood. The old method of bone marrow extraction is done from the pelvis, which is painful for the donor, and this is one of the reasons why many people are reluctant to donate bone marrow. But it’s different now. The donation process is now painless. Bone marrow is difficult to match successfully, and if one can successfully match, then it is one’s good fortune to be able to use a little bit of one’s blood to get a life back, no matter what.