Natural language processing method based on sentence structure analysis and application thereof

PURPOSE: A natural language processing method based on sentence structure analysis and an application thereof are provided to enable a user to execute an accurate information retrieval by finding out an accurate meaning of word in the natural language retrieval query inputted by the user through the Internet. CONSTITUTION: The natural language retrieval system comprises a service utility(100) of user, the Internet(200), a retrieval device(300) and a linking device(400). The linking device includes a word provider(410), a newly-coined word provider(420) and an auxiliary information provider(430). The retrieval device comprises a server(310) and a database(320) including a management DB(320), a thesaurus DB(322), a record information DB(323) and a retrieval result DB(324), and provides the information for a query requested by the user. The management DB stores a plurality of data need to relay the supply of retrieval information and the information for a plurality of affiliating web sites in order to manage the retrieval device.