All kinds of violations against individual`s material and immaterial immunity along with their physical integrity are prohibited by enforcements created in all law systems, which have inseparable bonds with universal human rights. Medical interventions are one of the exceptional circumstances of interference of individual`s physical integrity without punishment. The goal of this article is; to examine the legality of a medical intervention which has to be in compliance with the international conventions, domestic legislations and legal practices. We shall analyze the terms of our specific subject (i) to be authorized to practice medical interventions (ii) obligation to inform the patient (iii) the informed consent of the patient ; which are the minimum requirements to be obeyed by the ones who have the authority to practice medical interventions and medical interventions within the aim and the notions of compliance with laws, within the perspective of compliance of the law.