The review analyzes the content of the monograph “Representation in constitutional Law: issues of theory and practice” (Moscow: Justicinform, 2022, 484 p.) by S.A. Avakian. In the reviewed work the public legal relations of representation of the interests of various subjects are investigated: citizens, the president, territories. The substantive accents of representation are revealed mainly on the example of constitutional law. Based on the analysis of a variety of theoretical and empirical material, the author determined the legal content of the institution of representation, presented important patterns of implementation of public legal representation of interests in the Russian Federation. The comprehensive approach applied by the author, his study of various factors in the characterization of public legal representation of interests make the reviewed monograph interesting and useful to a wide range of readers.