The present application discloses a display panel and a photosensitive display device. The display panel includes a photosensitive array, an acquisition module, and a process module. The process module acquires target frame photosensitive data according to a difference result between a current frame photosensitive data and a previous frame photosensitive data, and deducts influence of background light or ambient light to the current frame photosensitive data, and then determines a current frame display coordinate of an external light source based on the target frame photosensitive data, which can improve accuracy of the current frame display coordinate.