The loss of great volume of blood compromises seriously functions of some agencies and can take a person quickly the death. In many situations, therefore, a simple transfusion of blood can be the difference between the life and the death. Still thus, until today no substitute for the blood does not exist, therefore the giver is the only source of blood for who needs its hemoderivados hemocomponentes or. Although the advances of science with the accomplishment of some discoveries involving the area of the health, was not still possible to find a substitute to have the same effect that the blood in the accomplishment of the transfusion. The transfusions are carried through to increase the capacity of the blood, to carry oxygen, to restore the volume sanguineous of the organism, to improve the immunity or to correct riots of the coagulation (MOURA, et al., 2006). The cited authors previously tell still, that historically the blood donation is folloied by myths and taboos, being resulted of a time where the technique-scientific qualification age incipient. Currently, thanks to the advances in the hemoterapia services it can, to offer safe and trustworthy services, based in technician-scientific knowledge of tip. But in Brazil, exactly with some information channels the subject still is surrounded by myths and concepts maken a mistake in relation to the blood donation. According to Health department (2007), the Brazilian population needs 5.500 stock markets of blood daily and 1.7% are only givers, when the recommended one for the World-wide Organization of the Health is of 3 5% of the population. One gives credit that this index is related to many myths and taboos that still circulate in the society, and of the lack of information of the importance of the donation of blood and also and credibilidades in the health services that are offered by the hemocentros.