Application of image in long-range precision strike of naval gun to seacoast fire support was discussedin which a new technical idea of using multi-source images from satelliteunmanned aerial vehicleTV-reconnaissance bomb and imaging terminal guidance shell for long-range precision strike to seacoast fire support was presented.Applications and development tendency of image in target strategic reconnaissancelocating and trackingdirected attack and damage assessment were analyzedand some key technical problems needing to be solved in image processing were pointed outwhich is useful for the development of large caliber naval gun weapon system.