The utility model discloses a stepless amplitude modulation device of vibrated roller liquid accuse, the involving vibrations axle, this vibration axle is installed in the steel wheel, the vibration axle is hollow structure, vibrate the epaxial eccentric liquid jar that is provided with, have two kinds of liquid through piston packaging in this off -centre liquid jar, the infinitely variable control of the different stereomutation amplitudes through changing two kinds of liquid. The utility model discloses a stereomutation that changes two kind interior liquid in the eccentric liquid jar realizes stepless amplitude modulation, simple structure, simple operation, the remote control of being convenient for.