Abstract: The paper designed a mine-used emergency communication service system based on SIP, described designs of the system architecture and business processes including emergency call, region location of communication terminal, multi-channel intercom and voice broadcast. The system follows the standard SIP protocol and its extension framework proposed by 3GPP, realizes highly integrated mine-used dispatching communication and emergency communication service system, which provides effective contact means and communication protection, and improves comprehensive utilization of underground communication system.