Abstract: The near ultraviolet band spectrum analysis was carried out on the firelight to the first stage warhead of series warhead, 310 nm~320 nm was selected as the shooting window of the high-speed camera, and the narrow band filter was used to filter out other spectra besides the shooting window. The objects in the firelight were illuminated at 320 nm with the auxiliary of laser, and the images of the objects in the strong firelight were clearly captured. Furthermore, the scientificity and effectiveness of the system were verified through the target penetration test of the series warhead.