Embodiments of the present invention disclose a method and system for implementing a multimedia ring back tone service. The method comprises: establishing a connection to a multimedia ring back tone platform when it is determined that either the calling party or the called party of a call is a user to the multimedia ring back tone service during call connection, and completing a media capability negotiation between a calling terminal and the multimedia ring back tone platform; acquiring a first media content and a second media content according to a multimedia ring back tone information of the user, and generating a streaming media from the first media content and the second media content; and playing the streaming media to the calling party. The present invention is capable of further improving existing multimedia ring back tone techniques to better meet the communication users' requirement for personalization.