The present invention discloses a video communication method and system, wherein, during an audio conversation between a calling party and a called party, an IMRS (Integrated Media Resource Server) plays a video to the calling party or the called party; or when a calling party initiates a video phone call request to a called party which does not support video phone call, an audio channel is established between the calling party and the called party and a video channel is established between the calling party and an IMRS, and when an audio conversation is established between the calling party and the called party, the IMRS plays video to the calling party; or when an audio conversation and a video conversation are established between a calling party and a called party, one party replaces its video with that played to the other party by the IMRS, therefore capabilities of developing new communication services are improved.