“两个先锋队”思想是对马克思主义政党性质学说的继承和发展。其继承体现为 :坚持了基本原则 ;继承了动态发展观 ;是历史经验的科学总结。其发展表现在 :新的概括表述 ;历史经验的新启发 ;解决了历史性课题 ;突破了传统框框。文中还从指导思想和价值取向、实践“三个代表”、加强党的自身建设三个方面陈述了在新世纪里如何当好“两个先锋队”问题 The “Two Vanguards” Thought is the Inheritance and Development of the Doctrine of the Nature of Marxist Political Parties. Its inheritance manifests itself as follows: adhering to the basic principles, inheriting the concept of dynamic development, and making a scientific summary of historical experience. Its development is manifested in: a new summary statement; new inspiration of historical experience; solving historic issues; and breaking through the traditional framework. The article also states how to be a good “two vanguard” in the new century from three aspects: guiding ideology and value orientation, practicing “Three Represents” and strengthening the party’s self-construction