A found-item information management server is able to hand a lost item over to the owner early with a high probability. When the finder of a found item sends found-item information to the found-item information management server using a first terminal, a found-item reporting unit registers the found-item information, partly as secret particular information, in a found-item information database. Thereafter, the owner of the found item sends a request to refer to the found-item information registered in the found-item information database using a second terminal. An information disclosing unit sends the found-item information registered in the found-item information database, except for the particular information, to the second terminal. When the owner sends lost-item information to the found-item information management server using the second terminal, a match determining unit determines a match between the lost-item information and the particular information stored in the found-item information database, and sends a determined result to the second terminal.