Disclosed is an information distribution system including: a SIP server; and a plurality of terminals registered to the SIP server, wherein the plurality of terminals are composed of: a distribution source terminal; and a distribution destination terminal, the SIP server includes: a storage section to store terminal information; an obtaining section to obtain terminal information of a distribution destination terminal; a producing section to produce the distribution destination information; and a sending section to send distribution destination information to the distribution source terminal, the distribution source terminal includes: a requesting section to request to send the distribution destination information; and a distributing section to connect to the distribution destination terminal and to distribute the predetermined information by peer-to-peer communication, the requesting section sends the predetermined information to the SIP server, and the sending section sends the distribution destination information and the predetermined information.