Lenin,combining the Marxist theory of party building with the reality of leading Russian revolution and socialist construction,carried out theoretical and practical exploration on the self-revolution of the proletarian party,which provided a solid theoretical support and practical guidance for the proletarian party to maintain progressiveness and purity,consolidate political power and long-term governance,and lead the social revolution.Lenin demonstrated the important role of self-revolution of proletarian party by criticizing wrong ideological trends,correcting erroneous principles and policies within the party,guiding the party construction movement,and advancing the anti-corruption campaign.On the occasion of the 100th anniversary of Lenin's death,it is of great historical and practical significance to revisit Lenin's exploration of the self-revolution of proletarian party,to deepen the study and implementation of Xi Jinping thoughts on party's self-revolution in the new era,to adhere to the centralized and unified leadership of the Party Central Committee,to deepen the construction of honest party and clean governance and the fight against corruption,to face problems and correct errors,and to improve the normative system of self-revolution.