This paper mainly describes the design and implementation of remote multimedia conference control system under complex structure and various conference scenarios. Through the deployment of distributed network video codec and network digital audio media matrix, the system encodes and decodes multimedia signals such as audio and video, and realizes the network transmission of multimedia signals. Through the customized development of conference control software, the remote one key linkage control of multi conference rooms, multi conference systems and multi conference scenes is realized, meeting control problems under complex structure and various conference scenes are solved, operation steps are reduced, human errors are avoided, conference control difficulty and maintenance cost are reduced, and normal holding of various business and administrative meetings is effectively guaranteed.