Abstract：Derrida's concept of Marxism is mainly embodied by the answers to what is Marxism and how to treat Marxism.Derrida's concept of Marxism does not appear without foundation.On the stage of post-Marxism, the west Marxism trend of thought appears.After drastic alterations of Soviet and eastern Europe, Marxism suffers serious setbacks.In the face of tattered capitalism, the critical weapon of Marxist does not lose its effect.Because of bumpy growth environment, Derrida approves Marxism.Derrida researches classic and goes into Marxism.Derrida follows Althusser and become attached to Marxism.

Keyword：Derrida;Marxist Concept;forming conditions;