Nurses who work with pregnant, postpartum and breastfeeding women value breastfeeding as a healthcare practice. In this sense, they ensure their professional presence in health facilities where their personal and professional values emerge and in uence the healthcare process, guided by the biological, cultural and social aspects of the phenomenon of breastfeeding. In this context, they establish values experienced in their daily lives in relation to breastfeeding, resulting from personal and collective knowledge and cultures that make up the praxis of care, starting to promote the bene ts of breastfeeding for the mother, child and family.