The present invention refers to an electric evaporation device with adjustable evaporation intensity, wherein a shield member (4) is displaceable between a minimum evaporation position in which it is interposed between a heating resistor (5) and an upper part of a wick (3), and a maximum evaporation position in which part of the shield member is located below said resistor (5). Since the shield member (4) is moved downwardly below the resistor (5), the upper end (13) of the wick (3) be located very close to an aperture (10) for the exit of the vaporized substance.