the invention relates to a method of selecting a rtp element in a dynamic multicast tree for a multimedia conference and a record medium recorded with a program for realizing the method that can be read by computers , and in particular to a method of selecting a rtp element in a dynamic multicast tree for distributing an overload applied to the root node of the dynamic multicast tree and a record medium recorded with a program for realizing the method that can be read by computers . the method comprises the steps of : confirming in the rtp element if the rtp element is subscribed to the dynamic multicast tree that a new multimedia terminal wants to join ; if the rtp element is not subscribed to the dynamic multicast that the new multimedia terminal wants to join according to a result of the confirmation in the step , joining in the rtp element the root node of the dynamic multicast tree and then causing the new multimedia terminal to join the dynamic multicast tree of a multimedia conference system ; and if the rtp element is subscribed to the dynamic multicast that the new multimedia terminal wants to join according to a result of the confirmation in the step , causing the new multimedia terminal to join the dynamic multicast tree of the multimedia conference system .