1, commodity definition: commodity used for exchange. As a matter of fact, most of the commodities used by human beings are labor products, so commodities have dual nature: on the one hand, they can be used to meet people's needs and have certain use value; On the other hand, it condenses the general labor of human beings and has certain value.

2. Commodity is the unity of use value and value. Its value is determined by the socially necessary labor time required to produce it. The exchange of goods between people is actually an exchange of their own labor. Therefore, commodity is a specific production relationship under the cover of things. Commodity is a historical category, and social division of labor and different owners' ownership of products are two historical prerequisites for producing commodities. Reflect different relations of production under different social systems.