Disclosed are a friend recommending method and a dynamic community generating method using an interest graph of music in a social network. According to an embodiment of the present invention, a friend recommending method using an interest graph of music in a social network, which is performed in a social network comprising a plurality of user terminals and a server for recommending at least one friend to each user of the user terminals based on the interest graph of music, comprises: allowing the server to receive, from the user terminals, information about musical activities performed by each user; allowing the server to give a point to every at least one of the musical activities included in the information about the musical activities performed by each user of the user terminals; and allowing the server to recommend at least one friend associated with the interest graph of music to each user of the user terminals, using the point given to every at least one of the musical activities.;COPYRIGHT KIPO 2014;[Reference numerals] (AA) Start; (BB) End; (S1) Receive information about musical activities; (S2) Give a point to each of the musical activities; (S3) Recommend at least one friend associated with an interest graph of music
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