Approaching genealogy under the baton of Nietzsche subjects us to interpretations and perspectives that make its delineation as a methodology of analysis of ruptures in history whether moral institutional or social a difficult goal to achieve. Thus this paper includes an analysis of how genealogy is in essence a critical practice of the present with a historical horizon. In Nietzsche we can identify two moments that will accompany this investigation: first the idea of using history for life in the second Intempestiva accompanied by what his genealogical project presupposes and how it is in line with the rest of Nietzschean philosophy around the transmutation of values nihilism and the individual; second that from the conclusions of the previous moment it is possible to draw conclusions about the role of genealogy as history for life constitutive of the genealogical individual. Contrasting to Nietzsche his French reception in Deleuze and Foucault whose work promoted and brought to contemporaneity the vision of genealogy as a critical practice of the present with historical horizon as ontology of the present although far from the end by the author proposed here.