The generalized circulation industry is the sum of all trade relations of commodity owners, including business flow, logistics, information flow and capital flow. In a narrow sense, circulation is an internationally accepted circulation service industry, including commission agency service, wholesale, retail and franchise. Generally speaking, the circulation industry refers to the intermediate link from production to consumption, which usually refers to the four major circulation branches of wholesale, retail, catering and logistics. Statistically, only the first three items are included, and the latter item has been increased in the last five years. In practical work, the catering industry is rarely involved in the formulation of circulation policies, because it is actually a part of the life service industry in the usual sense. Therefore, according to official documents, the development of the circulation industry basically involves three branches, namely, wholesale, retail and logistics.