The invention discloses a realization method of a media business and a communication system as well as related equipment, which can assemble different media services so as to meet the need of the media business. The method comprising the following steps: an assembled functional entity assembles a media service control message transmitted by an MRC after a media control channel is established between the media resource client MRC and a media resource server MRS; the assembled functional entity transmits the assembled media service control message to the MRS through the media control channel, and the assembled media service control message is used for indicating that the MRS provides the media services needed by the MRC according to the assembled media service control message. The invention also provides a communication system and related equipment. The invention can assemble different media services so as to meet the need of the media business.