With the rapid development of Internet technology and computer network technology, Android platform system has been widely applied to intelligent mobile terminal to make remote multi video chat anytime and anywhere possible thus improving work efficiency. Such multi video chat system based on Android platform has been concerned by many companies and research institutions. In our system Websocket is used as a communication signal, and WebRTC technology is used to transmitting video and audio in multi video chat system, which includes the server and the Android client. Remote multi video chat is realized by Android client within the same room. This paper focuses on the use of Websocket signaling and WebRTC technology to achieve multi video communication.