The utility model discloses an ultrasonic partial discharge simulation device. External 220V alternating current is converted into direct current voltage through an auxiliary power supply so as to provide power for a main controller, a high-voltage discharge gun and an ultrasonic generator. The ultrasonic partial discharge simulation device controls the main controller through a mode conversion module to send a high-voltage discharge gun starting signal to the high-voltage discharge gun, controls the high-voltage discharge gun to carry out discharging, tests in a mode of being combined with an ultrasonic tester, can reveal a phenomenon that ultrasonic waves are emitted to the surrounding space when partial discharge occurs directly and objectively, or controls the main controller through the mode conversion module to send an ultrasonic generator starting signal to the ultrasonic generator and controls the ultrasonic generator to generate ultrasonic waves, thereby enabling trainees to carry out measurement through the device, knowing the generation mechanism of the partial discharge ultrasonic waves, mastering skills in using an ultrasonic wave partial discharge tester, and solving a problem that it is inconvenient to carry out measurement on material objects of power equipment for system operation and that certain potential safety hazards exist in the prior art.