System and method for providing user-centric ranking search service

A system and a method for providing a user-centric ranking search service are provided to search information from a database according to a search condition set by a user offer a search result as a ranking list from search results previously stored in the database when requesting a search. A web server(140) provides a web screen for enabling a user terminal(110) to select a keyword and a search condition and receive the ranking list as the search result. A web document search server(150) constructs search result databases(183-188) by searching web documents in the Internet according to the selected keyword and search condition, and including information indicating an Internet frequency level of the keyword. A ranking determination server(170) provides a frequency level ranking list including a specific keyword and the selected keyword by searching the search result database according to the selected keyword and search condition. A search class database(181) stores keyword classification information for a search class screen.