An apparatus for providing a location-based service includes: a rules registry unit to register an event rule information based on an inheritance module for setting rules; a positioning information acquisition unit to obtain a positioning-related information of a user terminal device from a positioning apparatus; an event determining unit to determine whetheran event with respect to the event rule information occurs or not by using the positioning-related information to generate a determination result information; an event processing unit to generate a process information based on the determination result information; and a service providing unit configured to transmit the process information to the user terminal device.