In the commodity market, the discrete phenomenon of the commodities' market prices widely exists since kinds of reasons. Thus, the research for the discrete analysis of commodities' prices is positively significant in the both academic and practical sides. This article aims to improve the B2C online shopping market for our county's household appliances industry by investigating in the prices' discrete phenomenon of the market. Finally, it generally presents that the prices' discrete degree for the whole market is a little higher comparing with the normal category, whereas that for the large ones is the lowest in the household appliances categories.