保持共产党员先进性的本质:立党为公、执政为民共产党员的先进性是具体的和历史的,不同的时期有不同的要求和时代内涵,但必须坚持以社会发展的客观规律为依据,以维护和实现最广大人民群众的根本利益为出发点。并由此得出结论:共产党员先进性的实质是立党为公、执政为民。其理由 Maintaining the Nature of Party Members’ Progressiveness: The Progressiveness of Building a Party for the Public and Holding People in Power as Members of the Communist Party of China is Concrete and Historical. Different periods have different requirements and the connotation of the times. However, we must adhere to the objective laws of social development as the basis , In order to safeguard and realize the fundamental interests of the overwhelming majority of the people as the starting point. From this we can conclude that the essence of the advanced nature of party members is to establish the party for the sake of the public and to govern for the people. The reason