This article investigates the ecological relationship of humans to nature in Marx's early writing, mainly Economic and Philosophic Manuscripts of 1844. In order to re-examine Marxism, we hope to re-anchor Marxism within contemporary green ideologies. Three complementary aspects can be identified in Marx's early thought: the objectivity of humans, the subjectivity of humans, and the originality of nature. Since humans cannot exist independently from nature, Marx suggests "dialectics of labour" to harmonise their relations with nature. That is, once applying labour as a mediator to "humanizing" nature, humans in the meantime are also "naturalized" during the process of labouring over nature. Understanding this interrelationship of humans and nature, his thought is no longer anthropocentrism, but something beyond it. This promising linkage between Marxism and environmentalism is, we believe, the only way that Marxism can re-intervene in contemporary life.