A method for displaying autoradiograph having information on two-dimensional location of radioactively labeled substances resolved on a support medium, which includes the steps of:(1) obtaining digital signals corresponding to said autoradiograph and having information on the resolved positions of radioactively labeled substances and radiation intensity at said positions;(2) subjecting the digital signals to signal processing to obtain at least two-dimensional waveforms for one resolved row, which exhibit position along the resolving direction and signal level; and(3) displaying multiply the resulting two-dimensional waveforms at regular intervals in a direction perpendicualr to the resolving direction.