Purperas searched in the Unit of Health of Family VI, that they had received orientation on breast-feeding during the prenatal one. SOURCE: Research of Field, 2009. Professor Roy Taylor spoke with conviction. GRAPH 3 represents the orientaes received during the consultations from prenatal on breast-feeding, 70% had answered that they had received orientaes from the nurses during the consultations of prenatal, while 30% of them had told not to have received no type of orientation. During the prenatal assistance, the women must be informed on the benefits of breast-feeding and be guided how much to the techniques, advantages and eventual happened complications of the act to suckle. The amount and, mainly, the quality of the information given to the gestante in the prenatal one influence in the best choice that is the option for exclusive breast-feeding. GRAPH 4? (%) of purperas searched in the Unit of Health of Family VI on the knowledge of the nutricionais differences between the milk of cow and milk maternal. SOURCE: Research of Field, 2009. In relation to the knowledge of the nutricionais differences between the milk of cow and maternal milk, 75% of purperas do not know this difference, while only 25% of purperas have the knowledge of such differences (GRAPHICAL 4). It is perceived that the majority of purperas does not possess the knowledge on the composition of the milk of cow and the composition of human milk, is verified that more educative actions on the part of the professionals of the area of health in what are necessary says respect the biggest clarifications on these milk as well as its advantages and disadvantages, therefore, such information are of utmost importance for the agreement, sensitization and maintenance of the exclusive aleitamento until the sixth month of life of the child. The basic difference is the easy digestion of human milk for the baby, in relation the cow milk; another important advantage is that it is capable to reduce the incidence of alrgicas illnesses infectious.