A biopsy instrument including: a needle pipe formed in a tubular shape having a convex section, the convex section having an end section, the convex section being provided at a distal end section of the needle pipe a distal end tip provided so as to be capable of moving longitudinally with respect to the needle pipe a manipulation member connected to the distal end tip, the manipulation member being disposed in the needle pipe and a circumferential edge provided at each of a proximal end side of the distal end tip and a distal end side of the needle pipe wherein an interior of the distal end tip and an interior of the needle pipe define a cavity to capture a target tissue when the distal end tip is retracted towards the needle pipe.
