An electrostatic latent image evaluation device includes an optical scanner configured to irradiate laser light of a wavelength of 400 nm-800 nm on a photoreceptor sample, and form an electrostatic latent image, an electron gun configured to irradiate a charged particle beam to the photoreceptor sample having the electrostatic latent image, and surface electric charge distribution or surface electric potential distribution, a detector configured to detect an electron emitted from the photoreceptor sample by the irradiation of the charged particle beam, and an electrostatic latent image evaluation section configured to calculate sizes of a plurality of electrostatic latent images formed by the laser light each having different exposure energy density according to a detection signal detected by the detector, and evaluate the electrostatic latent image according to a change in the calculated sizes.