Method for recommending search word service using relation factor of business keyword and system thereof

A method and a system for providing a search word recommendation service reflecting relation factors of a business keyword are provided to recommend a search word by selecting factors reflecting relation to a business keyword, adjusting weight of each factor, and selecting a search word based on the weighted factors, and improve service quality and correctness by removing excessive search input data for the business keyword. A keyword selector(410) selects a business keyword, and a keyword score calculator(420) calculates a keyword score depending on weight of each factor reflecting relation to the business keyword. A search word fixer(430) fixes a search word depending on the keyword score. The keyword score calculator includes a factor selector selecting the factor reflecting the relation to the business keyword and a calculator calculating the keyword score by applying each weighted factor to the business keywords. The determiner includes a checker checking excessive search data among the business keywords and a remover removing the excessive search data from the business keywords. The factors reflecting the relation includes a query-query relation, a keyword relation, a purchase relation, search count/price/sale information, and title-abstract relation, and click information.