Concerned information recommendation system and method considering user's watching or listening time and the maximum playing time of the contents

PURPOSE: An interest information recommend system and a method thereof for supplying interest information to a user are provided to detect a relation rule by measuring the degree of interest and reproduction time of a user request contents. CONSTITUTION: A plurality of user terminals(10) supplies contents transmitted from an outer server. An inter contents relation in the user interest information deduction server offers actual reproduction time information based on maximum reproduction time of the contents. In case the contents request is received from a random terminal, the contents providing server offers the contents related to the requested contents according to the inferred associative relationship to the terminal.