The article presents the analysis of legal foundations of mother and child health care in the Federal Law No 323-FZ November 21 2011 "On the fundamentals of health care of citizen in the Russian Federation". The regulation applied in the Law concerning the public relations in the area of maternity and children care is supported by the public protection of mother and child interests and enhancement of their individual rights. This measure is provided by the development and implementation of programs targeted to prevention early detection and treatment of diseases, decrease of maternity and infant mortality, and development in children and their parents the motivation to healthy life-style and applying mechanisms of prevention and dispensarization.