PURPOSE:To produce stably and easily in an industrial view point an electrophotographic sensitive body having superior characteristics when a photosensitive layer contg. a specified butadiene deriv. is produced by specifying the solubilities of materials to be used as solvent for two kinds of butadiene deriv. CONSTITUTION:When an electrophotographic sensitive body having a photosensitive layer contg. a butadiene deriv. expressed by the formula I is formed on an electroconductive substrate, a mixed solvent consisting of a solvent A having >=5g/100g solubility for the butadiene deriv. and a solvent B having