Abstract: In order to solve the problem of low resolution of thermal imaging monitoring equipment in fully mechanized coal mining face, a design of dual spectrum fusion camera is proposed to realize the complementary advantages of thermal imaging and visible high definition image. Firstly, the hardware circuit of Hi3519V101 is intrinsically designed due to the high safety requirements of the equipment in the underground environment. Secondly, according to the characteristics of the bi-spectral image, SURF algorithm is used to extract the feature points, and the nearest neighbor and the next nearest neighbor algorithm are used to realize the matching of the feature points. Because there are some mismatching points in the matching process, RANSAC algorithm is used to eliminate them. The lifting wavelet algorithm is used to realize the bi-spectral image fusion, and the pseudo-color image is the output of the approximate thermal imaging. Finally, a dualspectrum camera prototype is designed and tested to verify that the camera can effectively enhance the details of underground images and meet the requirements of underground equipment monitoring.