The monograph gives the author's systematic vision of the theory of the socialist state developed by V.I. Lenin. The author sought to give a truthful assessment of the theoretical understanding of the socialist state, avoiding the extremes inherent in research conducted by Soviet authors, as well as modern critics of the Soviet state and Leninism. For specialists in the field of theory and history of state and law, political scientists, historians, undergraduates and graduate students - all who are interested in the problems of the history of the Soviet state and law, as well as the theoretical ideas of the ideologists of the Russian Communist Party, in accordance with which the construction of a socialist society and state was carried out at the stage of the dictatorship of the proletariat.