An electrophotographic photoreceptor of excellent durability having high sensitivity and light responsiveness, not suffering from lowering of the electric characteristics by exposure to light, change of circumstance, or repetitive use, and excellent in the cleaning property and not suffering from lowering of the picture quality of formed images for a long times, in which an enamine compound represented by the general formula (1), for example, an enamine compound represented by the following structural formula (1-1) is incorporated in a photosensitive layer 14, and the surface energy (.gamma.) on the surface of the photosensitive layer 14 is set to 20.0 mN/m or more and 35.0 mN/m or less, the electrophotographic photoreceptor 1: ##STR00001##