A frequency therapy device 10 is characterized by comprising a main device unit 20 that passes, between a pair of electrode pads 12, 12, a current corresponding to a predetermined voltage waveform, and a waveform memory 22 that is provided therein and stores a plurality of voltage waveforms at different frequencies, and in that: the waveform memory 22 stores the voltage waveforms in any of N waveform storage regions 22-1 to 22-N for each of N frequencies as waveform data comprising a square wave with a sampling frequency of 192 kHz or more and a number of quantization bits of 24 or more； the waveform data is read from the waveform memory 22 for each frequency, the waveform data is converted to an analog waveform by a D/A converter 24 during a preset time, and a current corresponding to the voltage waveform is passed between the electrode pads 12, 12； and the waveform memory 22 repeatedly and successively stores the waveform data for every set time for each frequency.
