The present invention relates to a three-party video conference. With the utilization of the monitor display resource by a host party, the assembled three-party video captured and decoded by the monitor display resource is transmitted to the conference-participant parties, the screen-captured real-time transport protocol (RTP) data transmitted from the host party are respectively displayed on monitors of the conference-participant parties, thereby eliminating the resource consumption of mixed video data, controlling the video resource loss, and providing a cost-effective hardware to enable three parties to see and hear from each other.