A device for treating a body surface of a living body by means of a dielectric barrier discharge plasma, with a planar, flexible dielectric (4) by which an electrode (1) attached to a high voltage source (3) is screened off from the body surface and which is suitable for placing on the body surface, functioning as counter-electrode, and is designed with a structured surface (7) which provides a gas space for the plasma discharge between dielectric (4) and body surface, which device permits the conduct of plasma treatment and the delivery of curative or healing substances without a change of the position of the device, by virtue of the fact that a layer (11) composed of a solid, open-pore matrix of a curative or healing material is arranged on the surface (7) of the dielectric (4).