A mileage service system using location information of a mobile communication terminal and a method thereof, capable of providing a user with a mileage service according to a travel distance are provided, in order for an information provider of the service industry or the like to differentiate a service to the user from a distance. A server 300 obtains location information, which a mobile communication terminal 100 detects by a detecting unit, by an obtaining unit, calculates a distance between a fixed property and a mobile communication terminal based on location information of the fixed property and location information of the mobile communication terminal, each stored in a database 330, by a mileage processing unit 320, and converts the distance to mileage points.