Abstract: Provided is a method of providing a location-based social search service. The method includes collecting, from a social network system, one or more pieces of visit history information including at least one of visit information of social search service users in association with at least a place and review data associated with the place, and storing the collected information; selecting a topic for each topic category from the visit history information; when a location-based query is received from at least one of the users, extracting a topic for each topic category from the location-based query; analyzing, for each topic category, a relationship between the topic extracted from the location-based query and the topic selected from the visit history information, and selecting at least one of the users as an expert.