Abstract: On the basis of the existing monitoring method of coal fire disaster, combined with the characteristics of coalfield fire area, according to the actual needs of the borehole temperature monitoring in the fire zone, the monitoring methods of the wireless ad-hoc network technology, mobile communication technology, internet technology and the temperature sensor were proposed. It realized borehole temperature short-range acquisition of the data and remote transmitting of the data in the coalfield fire area, solved the present difficult problem of remote monitoring coalfield fires. The field application showed that the communication distance of the system met the monitoring needs of large-scale coal fire, with high reliability, facilitated the realization of automation and networking of the coalfield fire monitoring.