This document deals with the study of the so-called estatuto de los parlamentarios (parliamentarians' statute) - one of the aspects of constitutional organics least studied in Colombia- integrated by two categories: prerogatives and prohibitions. These two instruments have been historically used in attempting. on the one hand, to ensure the freedom of the congressional action; and, on the other. to maintain a high level of exigency regarding the morality of those who are the representatives and voices of the people's will. This work. under a compared-law perspective and in the light of jurisprudential pronouncements. studies the advantages and difficulties offered by the exceptionally special - by reason of its demanding and rigorous nature - regulation adopted in our country on this matter.