A user has been unable to efficiently acquire desired information from a website even if it is a website that the user has browsed at least once before. There is provided an information processing device, which comprises: a browse history analysis portion which extracts information conforming with a predetermined subject from received data of a first device, and corresponding said information to reference data of said received data to store the corresponded data in a storage portion; and an information retrieval portion which receives an information retrieval request sent from a second device, along with a designation of a field subclassed in said predetermined subject, retrieves said storage portion from the information conforming with said predetermined subject, extracts said reference data corresponding to said information, and transmits same to said second device.
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