Agriculture nowadays tends to be subsumed by the producing models, which have grown rapidly under the capitalism. For the characteristics of producing process and products, the role of commercial capital is very important to the commercialization activities of agricultural products. Furthermore, in the section of agricultural production, the marketing system of livestock seems to be regulated by some factors, which are different from other agricultural products. Consequently, these factors make the functions of commercial capital; especially shaping, storage, and financing to be particularly necessary for maintaining livestock producing cycle, and have great influence on the marketing system. While observing the marketing system with a viewpoint on pork, it could he found out that the system is composed of five divisions, i.e. breeding, shipment, slaughtering, intermediating and retailing. In early stage, commercial capital ruled the pork market by controlling these stages. In order to adjust the market to an open and a fair one, the modernization of pork market is promoted mainly by nation's policies, cooperative activities of farmers and consumers. But the high development of livestock processing industry and integrated management, which are operated by a few large capitalists afterwards, has brought oligopoly competition to pork market and try to reorganize the market system by it's own ways. Accordingly, the prime problems of present stage are: (a) losing of farm potential, (b) unclearness of shipment structure, (c) low running of public slaughter-house and wholesale market, (d) disorder of retail market, which needs be solved pressingly.