Provided is a method of controlling the operation of a mobile terminal equipped with first and second display modules provided on first and second surfaces, respectively, of a main body of the mobile terminal. The method includes choosing an operation menu; displaying a first image corresponding to the chosen operation menu on a first display module; and displaying a second image corresponding to the chosen operation menu on a second display module. Therefore, it is possible to effectively control the operation of the mobile terminal using the first and second display modules.