FIELD : medicine.SUBSTANCE : group of inventions relates to medical and food industry and discloses an electron beam generator and an electron-beam sterilization device for sterilizing a packaging container by irradiating an electron beam. Electron beam generator has an electron emitting device which consists of a filament having a spiral section and an external support element in which a gap is formed. Proposed device comprises housing enveloping inner space and containing electron exit window and said electron beam generator.EFFECT : inventions can be used for sterilization of a package before filling it with a medical or food product, whereby microorganisms such as bacteria, fungi, viruses and spores are removed from the surface of the package.15 cl, 7 dwg