Attalah, ToufikMalkia, Nabil2025-05-252025-05-2520211112-9255http://dspace.univ-oeb.dz:4000/handle/123456789/22523The principle of universal criminal jurisdiction is a legal mechanism and a fundamental issue. It aims at strengthening the capacity of the national criminal justice system to eliminate impunity. Thus, this research has explored its content, legal nature, and importance. The research demonstrated constraints in implementing this principle. Accordingly, national laws must be adapted to establish an international criminal justice. In accordance with the international conventions ratified by the state, taking into account the principle of complementarity, in accordance with the provisions of international criminal law in the Rome StatuteenNational Jurisdiction; Procedural Legality Universal Criminal Jurisdiction; The principle of complementarityArticle