Abstract：The acoustoelectric effect of rock is investigated with experimental method in model borehole. Acoustic wave and electromagnetic wave are recorded in the condition of different salinity and the characteristics of the electromagnetic wave are analyzed by comparison with acoustic wave. The study results show that the converted electromagnetic wave is induced by the acoustic wave that propagates along the borehole，and the source of the acoustoelectric conversion is Rayleigh wave in the borehole. The electromagnetic wave radiated by the acoustic source is evidently different from the converted electromagnetic wave in frequency and phase. The water salinity is a main factor influencing the amplitude of the converted electromagnetic wave.
