Abstract: A frequency conversion ultrasonic wine aging device for bottled wine comprises a base (1), and an opening portion formed by extending upwards along a peripheral edge of the base (2); a container is arranged in the opening portion and used for containing a sound conducting medium solution; when the frequency conversion ultrasonic wine aging device is used, a wine bottle (3) is placed in the container and immersed in the sound conducting medium solution; an ultrasonic transducer (21) and a control circuit board (23) are mounted in the base (2); the control circuit board (23) is provided thereon with an ultrasonic generating unit and an ultrasonic frequency modulation unit; the ultrasonic generating unit is used for converting a commercial power into an ultrasonic frequency alternating current signal; the ultrasonic frequency modulation unit serves to modulate the frequency of the ultrasonic frequency alternating current signal so that the frequency of the ultrasonic frequency alternating current signal varied c