The remote monitoring system is made of GSM network, SCM and PC which are control centre, various sensors which are used for data gathering equipments. This paper introduces the PC control centre monitoring system. It includes many technologies, for example, the design of SCM, serial port data communication, netework monitoring, application of GSM network, program compiling written by Labwindows CVI for SCM, and so on. This system achieves a low-cost intelligent unmanned supervisory function, and realizes a 24-hour unmanned surveillance, and with real-time news reporting and emergency alert function.