The invention provides a chained commodity sales data processing method, which belongs to the field of commodity sales data processing and comprises a plurality of commodity manufacturers, a commoditysummarizing mechanism and a commodity transaction platform. According to the data processing method, through user-level digital processing, each consumer can become a distributor, so that commoditiescan be better distributed and publicized; the number of distributors is determined by the number of users, so that the problems that an existing distribution system can only select fixed or limited distributors for sale, and the problems that the market price is limited, and the sales quantity is limited and the quantity of distributors is limited are solved; meanwhile, the price of commodities is uniformly limited by a commodity transaction platform, so that the price of the same commodity in the market is unified, and commodity price unification and commodity brand creation are better facilitated; and the problems that existing market sales prices are not unified, and commodity brand creation and propaganda are not facilitated are solved.