بدر الدين حفصة2024-07-012024-07-012024https://dspace.univ-msila.dz/handle/123456789/42936The principle of retroactivity of the law that is best for the accused is one of the topics that has attracted the attention of most thinkers and jurists, as it is considered a check on legality and an important guarantee for the protection of human rights, as the new law is applied retroactively whenever it is best for the accused, and this is what the Algerian legislator stipulated in Article 2 of the Code. A. C. It is also guaranteed by most of the laws and conventions in the world due to the importance of implementing it to achieve the public interest by abolishing a criminal act that deems there is no point in imposing punishment on it, and for the individual interest, which is the right of the accused to benefit from a law that achieves punishment for him or decriminalizes him. Keywords: the principle of what is best for the accused, legal controls, guarantee for the protection of human rightsotherKeywords: the principle of what is best for the accusedlegal controlsguarantee for the protection of human rightsThesis