We propose an effective construction technology of the beef traceability system that conforms to the law relating to special BSE countermeasures to trace, track and indicate the history of beef products. This system makes it possible to share background information on beef between enterprises from producers to retailers by using Web EDI technology. The beef traceability system was implemented in September 2004. Twelve enterprises including retailers, processing traders, and wholesalers were using the system as of January 2005