Abstract: In the sealed space of underground coal mine, it has the characteristics of low illumination, high gas concentration and high smoke and dust content. Combining with the complex working environment and the needs of daily monitoring in underground coal mine, the intrinsic safety type of mine intrinsic safety type black light camera has been developed by studying night vision technology, photoelectric conversion technology, intrinsic safety technology and precise testing technology of mine intrinsic safety type black light camera. Laboratory and underground field tests show that the black-and-white minimum illumination of the intrinsically safe black-light camera can reach 0.0001 Lux, the horizontal clarity is 1100 TVL, and the gray scale is 11. Under the condition of low illumination and large coal dust, the real-time video picture can be clearly monitored and transmitted, which has the functions of eliminating hidden dangers of underground safety, monitoring daily work and underground rescue