This paper is the analysis of commodity theory in Das Kapital. First of all, we examine the way of analysis that Marx emphasized in'Einleitung zu den Grundrissen der Kritik der politiischen Ökonomie. His way of analysis is not a deductive method or an inductive logic. We decide that his way of analysis arose where these ways were sublated, and we read his commodity theory from this point of view. We prove that his commodity theory in Das Kapital can be put into the frame of Individuum-Gattung, Wirklichkeit-Bewufßtsein. As a result, the possibility of reconsideration of the theory of value-form arises. We reconsider the theory of value-form, adding human consciousness. We explain his logic ; from products to commodities, and from commodities to money. It will be clear that his commodity theory surmounts the theory of Hegel, Feuerbach, Ricardo, and Bailey. Finally, we point out the premises and characteristics in his theory and conclude whether or not Marx proved successfully that money was a commodity.