Abstract: There have been confusing phenomena in the present situation of Marxism in China. We have found that there exists a dual structure of "Marxism on platform" and "Marxism in forum". And, there are huge differences between them. In contents and in theory: there are their own traits between the Marxism on platform and the Marxism in forum. This paper tries to seek the common point between them. There come two different interpretations about Marxism. It is the main approach to respond to the real problems in Marxism development. The dual structure of Marxism can be a new perspective to comprehend Marxism.