“新民主主义社会论”和“社会主义初级阶段沦”是中国共产党在我国社会主义必经的发展阶段问题上对马克思主义的重大理论贡献。本文在详细考察从“新民主主义社会论”到“社会主义初级阶段论”历史发展脉络的基础上，对两论之间的内在联系作了探讨。 The theory of “new-democratic society” and “the decline of the primary stage of socialism” are major theoretical contributions made by the Communist Party of China to Marxism over the stage of the development of socialism in our country. Based on the detailed examination of the historical development of “theory of new-democratic society” and “theory of primary stage of socialism”, this article discusses the internal relations between the two theories.