Endoscope with a contamination protection device comprising - a shaft which defines a longitudinal axis and which has, positioned at its tip , a sideways directed optics , a lighting and/or a jet nozzle , - a grip piece adjacent to a cranial end of the shaft opposite to the tip, - a single- or multi-layered sheath which tightly encloses at least the shaft and which is closed at a distal end that covers the shaft tip, wherein the sheath is transparent at least in the region of the optics and the lighting , wherein the sheath closes the shaft and its tip at the distal end of the endoscope in a germ-tight manner, and the distal end of the sheath comprises a cap , which is plugged on after the sheath has been slipped over the shaft and is connected in a germ-tight manner with an open end of the sheath , wherein the cap - sheaths the tip in a germ-tight manner at least on a rear side of the tip which is opposite to the optics and, if applicable, an Albarran-lever , and - has a cutout which leaves open at least the optics and the lighting means and which is covered by a coverage made of a firm, elastic, transparent and germ-proof material that is connected to the cap in a germ-tight manner along an entire circumference of the cutout , characterized in that the coverage is penetrated by a tube that is placed inside a working channel of the endoskope and is connected to the tube at the penetration location in a solid and germ-tight manner. - a shaft which defines a longitudinal axis and which has, positioned at its tip , a sideways directed optics , a lighting and/or a jet nozzle , - a grip piece adjacent to a cranial end of the shaft opposite to the tip, - a single- or multi-layered sheath which tightly encloses at least the shaft and which is closed at a distal end that covers the shaft tip, wherein the sheath is transparent at least in the region of the optics and the lighting , wherein the sheath closes the shaft and its tip at the distal end of the endoscope in a germ-tight manner, and the distal end of the sheath comprises a cap , which is plugged on after the sheath has been slipped over the shaft and is connected in a germ-tight manner with an open end of the sheath , wherein the cap - sheaths the tip in a germ-tight manner at least on a rear side of the tip which is opposite to the optics and, if applicable, an Albarran-lever , and - has a cutout which leaves open at least the optics and the lighting means and which is covered by a coverage made of a firm, elastic, transparent and germ-proof material that is connected to the cap in a germ-tight manner along an entire circumference of the cutout , - sheaths the tip in a germ-tight manner at least on a rear side of the tip which is opposite to the optics and, if applicable, an Albarran-lever , and - has a cutout which leaves open at least the optics and the lighting means and which is covered by a coverage made of a firm, elastic, transparent and germ-proof material that is connected to the cap in a germ-tight manner along an entire circumference of the cutout , characterized in that the coverage is penetrated by a tube that is placed inside a working channel of the endoskope and is connected to the tube at the penetration location in a solid and germ-tight manner. <EOS>