关键词: 《共产党宣言》 , 阶级斗争 , 改良论 , 革命论

Abstract: The word “Class”occupies an extremely important position in the Marxist theory. In the Communist Manifesto, Marx explained the basic content of historical materialism through the historical interpretation of class and class struggle, not only promoted the confirmation of the proletariat itself, but also promoted the proletariat in Europe and the world's revolutionary activities. However, Marx and Engels did not make a clear definition on the “class” concept and led to different understanding and interpretation of the concept which fanally came up with two ways of interpretation: one is the Reformism and another is Revolutionism. This has produced profound effect on the development and dissemination of Marxs class theory. At same time it caused confusions for people to understand the core theory of Communist Manifesto .

Key words: Communist Manifesto , class , reformism , revolutionism