Abstract: An information delivery method based on a peer-to-peer enabled distributed computing technology on a network is described. The parallel delivery system and method comprises a server for dividing information to be delivered into data of a predetermined size and storing the divided data; client for requesting arbitrary information; a plurality of peers including Peers for redundantly storing the divided data and performing delivery of the data of the predetermined size on behalf of server. Since information is delivered not through one-to-one delivery between the server and the client but through parallel delivery among a plurality of peers and the client, time required for delivering data of the same size can be remarkable reduced. In addition, since the central server does not centrally control all requests from all clients but the plurality of peers simultaneously process the requests in parallel, load of the server can be greatly reduced.