Abstract: The large railway tunnel is in long course, and the emergency rescue is difficult. On the basis of existing tunnel rescue equipments such as emergency lighting, fans, pumps, etc., this article combined with the remote automation control technology to build a Railway Tunnel Monitoring System of disaster prevention and rescue equipment. The System could implement the remote real-time monitoring on the running state of railway tunnel disaster prevention and rescue equipment, automatic fault alarm, remote control of disaster prevention and rescue equipment operation in emergency case, the function of emergency rescue. The article introduced the development method of constructing the system with SCADA technology.