To provide an information retrieving service system through the Internet for retrieving information providing services provided by plural information providing sites so as to compare the services with each other and examine them easily.

An information retrieving site S1 connected with the Internet is provided with a retrieving server S1a and a retrieving database S1b. The server S1a of this site S1 fetches data showing service contents provided from plural hotel reservation sites S2, S3... by the respective sites S2, S3... to store it in the database S1b, retrieves corresponding data from the database S1b based on information retrieving input from an information terminal device T, which accesses this site S1, and displays the data read by this retrieval on the device T.