Abstract: When the TV sight of airborne EO device is viewing the backlighting object, the brightness changes dramatically, which can produce image blooming,so the system is unable to capture useful details.Aiming at the problem, we proposed a scheme to solve the image blooming by utilizing the laser auxiliary illumination. When the equipment observed the backlighting object, the designator illuminated a laser of a certain frequency to irradiate the object,meanwhile, the exposure time of camera was reduced so as to decrease the illumination. Experiment shows that the TV system can format a image of laser irradiation，the histogram difference of the image edge is about 55,which meets the demand of edge detection, and the edge information can be distinguished.