As the foundation work of studying Marx's concept of nature, Schmidt's Marx's Concept of Nature puts forward many classical assertions. Among them, the view that nature and society mediate each other has the most far-reaching influence. It made Schmidt not only avoid the fallacy of choosing between nature and society as the predecessors did, but also basically grasp the practical characteristics of Marx's concept of nature. The mutual mediation between nature and society is based on the premise of the non-identity of the subject and the object. In order to ensure such non-identity, Schmidt, while highlighting the practical characteristics of Marx's concept of nature, had to repeatedly reiterate the existence of the "natural matrix that cannot be restored to the social stipulation of human beings". The dual logic of "practice priority" and "material priority" not only reflects Schmidt's sharp theoretical thinking, but also makes his Marx's Concept of Nature contain internal contradictions that are difficult to reconcile, and thus presents an obvious color of eclecticism.