The following article will present an analysis of the main postulates developed by the Colombian philosopher Santiago Castro-Gomez from which it is evident how his reading of Michel Foucault operates around genealogy in its discursive order. I will begin by exposing the methodological limits of genealogy as a method of analysis within the philosophical proposal of the Colombian. Then, I will show which were the genealogical implications that influenced the decolonial turn within this proposal. And finally, I will explain the arguments that support the investigative bet called Genealogy of Colombianity.