As the rapid development of streaming media technology and IP communication technology, the SIP protocol and RTSP protocol interoperability issue becomes increasingly prominent. This paper discusses the protocol communication problem between SIP and RTSP protocol from the aspects of protocol method corresponding, address mapping, interactive process design and so on. And based on the RTSP proxy server, the SIP and RTSP protocol conversion module is designed and implemented, realized the protocol method conversion between SIP and RTSP. Finally, the paper verifies the feasibility and validity of the method by taking SIP Client access RTSP camera to obtain real-time image as an example, which provides a good solution for the integration between the multimedia scheduling system based on SIP protocol and RTSP devices.