Abstract: From the very beginning，practical dialectics was raised and expounded on as an important component of practical materialism and an intellectual outcome of the critique and transcendence of “materialist dialectics” as seen in conventional textbooks.In the study on dialectics since the country embarked on the New Period，researchers have been sharing a similar interest in practical dialectics.However，due to different choices of texts and frameworks of interpretation，certain divergences do occur.This essay，based on a close reading of Manuscripts in Paris and The German Ideology，finds that in the context of Karl Marx's times，the dialectics on the alienation of labor and that on the alienation of association are the two dimensions of practical dialectics.They provide support for，and feed a great deal on，each other，forming the very staff of historical dialectics.There isn't a rupture in Marx's dialectical thought.On the contrary，it fully demonstrates the inevitable interaction between the valueoriented principle and the purely scientific principle in man's real-life operations.  

Key words: practical dialectics , alienation-related dialectics , historical dialectics , the alienation of labor , the alienation of association

摘要： 实践辩证法一开始就是作为实践唯物主义的重要内容而提出和论证的，是批判和超越传统教科书的“唯物辩证法”的思想成果。在我国新时期的辩证法研究中，注重实践辩证法成为研究者们的一个共同倾向，但由于对文本的选择和解释框架不同，也出现了一些分歧。本文在细读《巴黎手稿》和《德意志意识形态》文本的基础上，认为在马克思的历史语境中，劳动异化辩证法和交往异化辩证法是实践辩证法的两个维度，它们相互支撑相互为用，构成了历史辩证法的实质内容。马克思的辩证法思想并不存在“断裂”，相反，倒是充分显示了人的实践活动中价值原则与科学原则之间必要的张力。

关键词: 实践辩证法 , 异化辩证法 , 历史辩证法 , 劳动异化；、 实践辩证法 , 异化辩证法 , 历史辩证法 , 劳动异化 , 交往异化