The subject of the study - the problems of establishing size and form of child‘s mainte-nance. A child‘s right to maintenance is inalienable natural right, so parents‘s duty to maintain their children must be regarded as very important one. The purpose of this study is to reveal ac-tual problems of implementation of a child‘s right to maintainance setting the right size and form of maintenance and securing the problems of such a rendering of maintenance through ana-lysing doctrine, rules of interpretation formed by courts and acts of law. Author analyses the re-gulation of legal relations of the child‘s maintenance in Republic of Lithuania, states of Europe-an Union and qualifies the problems arising in practice of courts. The first chapter analyses the concetion of the child, the importance of the child‘s right to maintenance. The second chapter analyses the establishment of size and form of child‘s main-tenance, the replacement of the size and form of maintenance: overlooks the systems of establis-hment of size, analyses the criterions determining the size and form of maintenence, rules of in-terpretation and application formed by courts and arising problems. The third chapter analyses the importance of implementation of public interest in the process of establishing the child‘s maintenance, the role of the state establishing the maintenance, the size of the maintenance which is provided by the state, order and conditions. The main conceptions of the study – maintenance... [to full text]