Abstract: The audio and video system of mine search and rescue robot is designed based on the Linux. The system selects a 1/2.7 inch CMOS USB binocular camera, BH1750 light intensity acquisition and 850 nm infrared compensation light as the video acquisition scheme under low illumination environment, the hardware has intrinsically safe power conversion circuit and wired/wireless communication interface, the system realizes the acquisition of two high-definition audio and video in the low illumination environment of coal mine, and carries out compression, storage, display and transmission for the collected audio and video data.