PROBLEM TO BE SOLVED: To provide an oblique endoscope whose distal end structure includes a cover lens located on a distal end slope formed on a distal end body of an insertion part and a prism and a rear group lens barrel located behind the cover lens, especially whose cover lens is highly strong in its joint strength and cannot be easily removed off the distal end body.SOLUTION: A counterbore storage concave part 14 is formed on the distal end slope of the distal end body a lens storage concave part 21a is formed on a front surface of a prism receiver plate 21, and the cover lens 22 is stored in the lens storage concave part 21a of the prism receiver plate 21 and bonded thereon. The prism 23 is bonded and fixed on a rear surface of the prism receiver plate 21, and the prism receiver plate 21 and the cover lens 22 are bonded and fixed on the counterbore storage concave part 14 by filling an adhesive agent around the cover lens 22 on the front surface of the prism receiver plate 21 stored in the counterbore storage concave part 14 of the distal end body.
