The invention relates to a volatile substance evaporation device comprising a body (3) containing a liquid and a heating element heating said liquid for evaporating same, wherein said heating element is a heating film (1 ). Furthermore, said body (3) defines an evaporation surface, and said heating film (1 ) preferably has an area substantially the same as the area of said evaporation surface. The invention allows obtaining a homogenous and quick heat distribution.L'invention porte sur un dispositif d'évaporation de substance volatile comprenant un corps (3) contenant un liquide et un élément chauffant fait d'un film chauffant our chauffer le liquide et l'évaporer. Le corps (3) définit la surface d'évaporation, et le film de chauffage a de préférence une surface identique à la surface de la surface d'évaporation. L'invention permet d'obtenir une répartition de chaleur homogène et rapide.