The purpose of this paper is to consider the advantages and disadvantages of introducing a new specialized mechanism for the protection of the rights of the child within the framework of the European Union, as well as to consider how its introduction could affect the further development of the Europeanization of the national judicial systems of the member states. The paper briefly presents information on the functioning of the Court of Justice of the European Union, as well as the principle of the best interests of the child and selected cases that the Court of Justice of the European Union decided on, which concerned either indirectly or directly, the well-being of the child. The paper offers possible legal solutions, what the proposed mechanism should or could look like, while providing a legal basis for the application of the principle of the best interests of the child, as well as the introduction of the institute of a specialized representative for the rights of the child, within the relevant acts of the European Union and the Council of Europe and the recent practice of two European courts.