In order to realize an electrophotographic photoreceptor excellent in abrasion resistance, a photosensitive layer of the photoreceptor comprises a polyester resin containing a repeating structural unit represented by the formula (1) and a hydrazone compound. In the formula (1), Ar<1> to Ar<4> each represent, independently of each other, an arylene group which may have a substituent, X<1> represents a bivalent group (including a single bond) and X<2> represents a bivalent group (including a single bond) with 3 or less atoms.