A supply information management system (710) comprises a reader/writer (711) for writing process information on each of the processes to an IC tag (5) and reading information out from the IC tag (5), the reader/writer being provided for a station for performing each of processes to supply a diaper product with an IC tag (5), and a host computer (715) for receiving the information from the reader/writer (711). In the host computer (715), a product database which is a set of data elements each associating a serial number of an IC tag (5) with process information thereof is stored and updated on the basis of the information from the reader/writer (711). The supply information management system (710) makes it possible to specify an individual diaper product and perform a proper and easy management of information on supply of diaper products.
