A friend recommendation method and a dynamic community generating method using an interest graph of music in a social network are disclosed. A friend recommendation method using an interest graph of music in a social network, according to one embodiment of the present invention, is carried out in a social network comprising a plurality of user terminals and a server for recommending friends to each user of the plurality of user terminals on the basis of an interest graph of music, and the method comprises the steps of: enabling a server to receive music activity information carried out by each user from the plurality of user terminals; enabling the server to give points for at least one music activity included in the music activity information carried out by each user of the plurality of user terminals; and enabling the server to recommend at least one friend associated with the interest graph of music to each user of the plurality of user terminals by using the score given to the at least one music activity.
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