An item delivery service capable of distributing items while maintaining anonymity between an exhibitor (vendor) and a successful bidder (purchaser) is provided.According to a delivery management system (when used for an escrow system) of the present invention, an exhibitor terminal 240 is notified only of information about a delivery service base in charge of an address of a successful bidder for delivery of an item. Accordingly, the item can be delivered up to the delivery service base even when the exhibitor does not know personal information such as the address and name of the successful bidder.On the other hand, a service base terminal 232 of the delivery service base where the item arrives is notified of personal information of the successful bidder. Accordingly, the item can be delivered from the delivery service base to the successful bidder even if personal information of the exhibitor is not described on a delivery form or the like of the item (without notifying the successful bidder of personal information of the exhibitor). That is, according to the present invention, items can be distributed while maintaining anonymity between the exhibitor and the successful bidder.