Marx put philosophy problems, especially the existence problem as the research subject, and examined what the real problem of philosophy is and how we sublate the existence problems. Marx analyzed Hegel and Bruno Powells understanding strategy of existence and its speculative philosophy based on the practice of the understanding perspective of existence, illustrated a real practical philosophy thought, that is the essence and the sublating basis problems of reason by combining philosophy with reality. However, the text argumentations dual logic miscibility in the period of Marxs legal materialism makes Marxs understanding strategys attitude towards practice be further developed and perfected in the perspective transformation.