Lenin Wrote State and Revolution more than 100 years ago for three reasons: the first is to eliminate all kinds of erroneous ideas on state issues made by the opportunists of the Second International and bourgeoisie;the second is to answer the pressing questions that the Russian proletarian revolution faced; the third is to correct some theorists’ one－sided state outlook in proletarian revolutionary movements.State and Revolution,as an encyclopedia of scientific socialism,regains and expounds systematically the state theory of the founders of Marxism,elaborates scientifically the thought of proletarian revolution,and advances the theory of proletarian dictatorship.This book restraints effectively the overflow of the opportunist thought，guides the Bolshevik to the great victory of the October Revolution,and influences the proletarian liberation movements in other countries profoundly.And it is still of great practical significance for China today．

Editor: Zhong Yao

Studies on Marxism.2019.No.12.