Biosignal processing method and apparatus are provided. The biosignal processing method includes: detecting a biosignal, which is generated by a movement of a heart existing in a second area of a subject, from a first area of the subject; generating of a biosignal waveform from the biosignal; determining a relative position of the first area with respect to the second area based on at least one of the biosignal waveform and a direction of the first area; and converting the biosignal waveform to a reference biosignal waveform based on the relative position.