To increase the operation efficiency of a serviceman and to suppress the stocks at a service shop while supporting the distribution of maintenance parts by using a network such as the Internet and lowering the distribution cost by using an existing low-cost fixed-time distribution network.

A managing server 3003 is equipped with a maintenance parts specification part 302 which specifies maintenance parts according to abnormality information when informed of abnormality by electronic equipment of users 3001 and 3010 through the Internet 3002, a distribution base candidate retrieval part 303 which retrieves distribution base candidates near the user's addresses from a distribution base information database with stored information regarding distribution bases such as a convenience store, and a distribution network determination part 304 which determines the distribution network capable of distributing the maintenance parts to the distribution bases the earliest by retrieval from a distribution network time information database with stored periodical patrol time information on distribution networks that the respective distribution bases belong to.