The objective of this research is to study corruption, but from a preventive perspective under an administrative law approach. The theoretical-conceptual framework is developed, for which we resorted to the study of the doctrine and the references of mechanisms implemented in Chile and Uruguay, taken as more advanced systems from which lessons learned can be extracted. The following section presents the results of the research, with the development of each of the proposed mechanisms, divided into the following areas: human resources, public contracts, declarations, internal control system and attention to complaints, government openness and laws that need to be approved in the country to have a legal regime that strengthens the prevention of corruption.Subsequently, it develops the need to create an independent constitutional body to act as the governing body of the National System of Public Ethics and Anticorruption to lead and articulate the efforts being made in this area to effectively fight corruption.