This invention relates to a production system for retail goods which is intended for timely collection of accurate sales information from retail outlets and flexible production of goods in accordance with the same information, and includes sales information collecting units for collecting sales information at a plurality of sales outlets, a production size determining unit for determining a production quantity to be produced in the future for a plurality of goods based on the sales information received from the plurality of sales information collecting units, and a production unit for flexibly manufacturing the plurality of goods based on the sales information which is collected at the plurality of sales information collecting units. After the production size determining unit determines the production quantity, output data indicative of the production quantity determined by the production size determining unit is transmitted to the production unit so that the production unit manufactures the production quantity of the plurality of goods.