Heidegger clearly defined his concept of time as “four-dimensional time”,and Marx's concept of time can also be understood from four dimensions, that is, history,reality and future,as well as the unity between the dimensions achieved through social mainly understands history, present and future from the perspective of the individual's practice. From the comparison of the four dimensions, it can be seen that Heidegger authentical“experience”,while Marx understands history, reality(present)and future from the perspective of concrete social production practice. On the whole, Heidegger interprets from the perspective of“alienation”,and Marx not only criticizes from the perspective of“alienation”, but more importantly, he also goes deep into the analysis of the specific contradictions of society, and reveals the specific path to achieve the emancipation of man.