Abstract: The present invention relates to an apparatus for the additive production of components. The apparatus comprises an additive production head having an extrusion nozzle and a plasma source arranged around the extrusion nozzle or integrated into the extrusion nozzle for the generation of plasma. The present invention additionally relates to a method for the additive production of components. A plasma is generated in the method with the aid of a plasma source arranged around an extrusion nozzle of an additive production head or integrated into the extrusion nozzle. A material is furthermore melted, pressed through the extrusion nozzle, and deposited in layers. In addition, a treatment by the plasma takes place in which a surface on which the material is deposited in layers is treated with the plasma before the deposition and/or the material is treated with the plasma before, during, and/or after the deposition.