Twenty-eight normal bone marrow donors aged 24 (4-53) years received autologous blood transfusion during the marrow harvest for the allogeneic bone marrow transplantation. The median volume of marrow removed from the donors was 1042±234ml. The median volume of autologous blood transfused was 611±200ml. No donors required homologous blood transfusion. Autologous blood transfusion is useful for marrow donors to avoid the risks of homologous blood transfusion.