According to one example of the present invention, provided is a method for allowing an advertisement-providing server connected to a user terminal to provide an advertisement through an advertisement-providing application installed on the user terminal, the method comprising the steps of: (a) receiving, from the user terminal, an activation-requesting signal for making a request to change the state of a display part of the user terminal from being off to being on; (b) providing the advertisement to the display part according to the activation-requesting signal; (c) receiving, from the user terminal to which the advertisement is provided, an advertisement content-requesting signal for making a request to provide advertisement content associated with the advertisement; (d) if receiving the advertisement content-requesting signal, providing the advertisement content to the user terminal; and (e) accumulating, for the user terminal, a first reward according to the activation-requesting signal and a second reward according to the advertisement content-requesting signal.