党的纯洁性是无产阶级政党的一贯追求。中国共产党在历史上的各时期都把保持党的纯洁性摆在党建的重要位置;严格党员标准,提高党员质量作为保持党纯洁性的基础。本文主要考察中共在成立初期对党员标准、思想建设和组织建设的探索,以及革命建设实践中纯洁党员成分、开展整党整风运动等对党员标准转变的深化。 The purity of the party is the consistent pursuit of proletarian parties. In all historical periods, the CPC has placed the purity of the party in the important position of party building. It has strictly ruled the standards of party members and raised the quality of party members as the basis for maintaining the purity of the party. This paper mainly examines the Party members ’standard transformation deepened in the early days of the CPC’s exploration of Party members’ standards, ideological and organizational construction, as well as the pure Party members in the revolutionary construction practice and the rectification and rectification campaign.