Safeguarding the rights of participants in criminal proceedings is of particular importance and is characterized by a very impressive number of means used. The leading place among them is occupied by the criminal procedural form. In recent years, the criminal procedure form has undergone significant changes. In an effort to create an effective system for the protection of rights and freedoms, the legislator has expanded the scope of legal regulation of certain criminal procedural legal relations, which is due, among other things, to the accelerated development of society, leading to the emergence of new relations requiring criminal procedural regulation, as well as the objectively growing need to change criminal procedural relations. At the same time, a tendency towards differentiation appears and develops. In this regard, the question of the causes and objectivity of the development of differentiated forms becomes particularly relevant. The author puts forward a hypothesis about the impact of the idea of individualization on the criminal procedural form. The position is substantiated according to which individualization is capable of ensuring a regular, rather than chaotic, development of differentiation of forms and thereby creating an effective system of means for safeguards of the rights of participants in criminal proceedings.