ABSTRACTObjectives:to analyze obstetric nurses’ professional training in Minas Gerais between 1957 and 1999, according to genealogical principles.Methods:a qualitative interpretative study based on historical research with genealogical analysis. Data were obtained through documentary research and oral history, with six participants, and submitted to discourse analysis.Results:they recompose the genealogical path of obstetric nurses’ professional training from Minas. The speeches reveal field of practice deprivation in professional training and the importance of the articulation between the Universidade Federal de Minas Gerais Nursing School and Hospital Sofia Feldman for teaching and work in obstetric nursing. It was identified that training, in the national scenario, evolved from a Escola de Enfermagem Carlos Chagas’ peripheral initiative to centrality and capillarity.Final Considerations:the unique historical trajectory of obstetric nurses’ professional training in Minas Gerais, marked by ruptures, institutional articulations, conflicting games and interest, was unveiled.