An electronic tuning fork device including a control unit including a processor, electrically connected to an input unit and the display component, wherein the processor is configured to generate a first square wave signal and determine a gain parameter according to a predetermined mode, wherein the gain parameter is a value selected from between a predetermined maximum value and a predetermined minimum value, a frequency divider electrically connected to the processor, configured to down-convert the first square wave signal and output a second square wave signal, a first waveform conversion circuit, electrically connected to the processor, configured to convert the first square wave signal into a first sine wave signal, a second waveform conversion circuit, electrically connected to the frequency divider, configured to convert the second square signal into a second sine wave signal, a mixer, electrically connected to the first and second waveform conversion circuits, configured to mix the first sine wave signal and the second sine wave signal and output a sine wave signal, and a gain control circuit, electrically connected to the processor and the mixer, configured to change the amplitude of the sine wave signal according to the gain parameter, wherein when a control signal is generated, the processor receives the control signal and determines a corresponding gain parameter, the processor calculates the measurement result according to the corresponding gain parameter, the predetermined maximum value and the predetermined minimum value.
