Abstract: A method is disclosed for treating erectile dysfunction includes arranging a therapy apparatus to be connected to an electrical power source, placing a skin electrode on two sides laterally of a penile shaft and employing an amplifier for performing the stimulation. A current is applied transcutaneously for a regeneration of the smooth musculature of the penile corpus carnaversum. The current applied has zero line-symmetrical impulses of rectangular or trapezoid form with a built-up time of 0,01 to 2 seconds, a stimulation period of 1 to 60 seconds direct or alternating, a stimulation pause of 0.01 to 60 seconds, a frequency range of 1 to 50 Hertz and an impulse period of 100 .mu.s to 10 ms. Advantageously, the stimulation is performed diagonally alternatingly with zero-line symmetric impulses of trapezoidal shape in a first channel and in a second channel with alternating stimulations. The frequency for the first channel is 10 to 20 Hertz and the frequency for the second channel is 20 to 35 Hertz.