Abstract: We design the wireless monitoring system of undergound rescue robot. The system adopts 2.4 GHz wireless high frequency radio connects with wireless network bridge, which builds wireless communication path between coal mine and ground. Through the path, the rescue robot can transmit the disaster information including video surveillance and remote control and data acquisition to PC in time. Simulation anlysis by MATLAB/Simulink of propagation characteristic of wireless communication channel in coal mine are also given to promote the performance of the system.