The invention discloses a supermarket commodity sorting system. The working principle of the supermarket commodity sorting system is as follows: the system automatically classifies commodities in theorder of a customer; the order reaches the computer of the sorting system; commodity feeding is finished according to the commodities in the order; the commodity ID is bound with a transportation frame numbering system; during the transportation process of a transportation frame, the commodities are identified through code scanning and automatically go to all sorting stations; the commodities areidentified at the sorting stations, and the bar codes of the commodities in the sorting frame are free of binding; and the commodities in the order arrive and are packaged for transfer. The supermarket commodity sorting system is simple and feasible to operate, is suitable for the demands of different commodities including fragile products and fresh preservation products according to commodity classification, realizes bar code binding of the commodity and the transportation frame during the transportation process, solves the problems that the bar code of the commodity is not fixed in positionand difficult to identify, ensures precision of a transportation route and solves the problems about commodity sorting efficiency and labor cost of the supermarket.