This thesis deals with the participatory rights of children, especially their implementation within selected institutions of family law. The work progresses from the theoretical part to the practical part. In the theoretical part are define the basic concepts that are relevant to the topic, for example interest versus the child's wishes, the proportionality test itself or participatory rights. The core of the work is to review and legal analysis of individual situations where is a realization of participatory rights and their collision with the rights of other persons or bodies (or the best interests of the child). These collisions are solved by the selected institutions of family law, in connection with gauge parents, in cases of institutional care, in relation to adoption and in cases of domestic violence. These collisions are dealt with under current legislation, the Constitutional Court and European Court of Human Rights. Due to the new Civil Code, the work deals with the concept of participatory rights in the light of this Code, including the assessment of the degree of European harmonization trends.