1. A system for accumulating social relation information for social network services, comprising: a user location profile management unit for collecting at preset periods location profile information of a user; a user profile management unit for collecting and storing user profiles preset by the user; a social activity tracking unit for collecting profiles from social activities of the user; a social relation information generation unit for collecting pieces of information and extracting new social relation information based on correlations between the pieces of collected information to generate a social relation ontology, wherein the pieces of information are received from the user location profile management unit, the user profile management unit and the social activity tracking unit; wherein the social relation information generation unit comprises: a profile collection unit for receiving and collecting information about the individual profiles; a correlation comparison investigation unit for determining whether a change has occurred in correlations with existing profiles by comparing and investigating correlations between the social activities; a social relation profile collection unit for combining a correlation, which has been changed, with the existing profiles or updating the existing profiles; a social relation information generation unit for extracting relation information from the information collected by the social relation profile collection unit according to a preset classification for social relation formation; and a normalization unit for converting the extracted relation information into a social relation Ontology Web Language (OWL); wherein the social relation information generation unit is configured such that: if a new social relation has been extracted, changed user profiles are transferred to the profile collection unit, and changed social relation information is transferred to the social relation profile collection unit.