In the biopsy needle of an embodiment of the present invention, first and second through holes (13, 14) that penetrate the wall of the hollow needle section (11) are provided on the back end side of the needle-shaped opening (12). One end of a thread (15) is passed through the first and second through holes (13, 14) and is fixed to the hollow needle section (11). The portion extending from the one end of the thread (15) is fixed in a loop shape on the opening wall along the wall (12a) of the needle-shaped opening (12) with an easy-peel adhesive, and the other end is inserted so as to pass through the interior of the hollow needle section (11) and extend beyond the back end of the hollow needle section (11). Because tissue (21) at the needle-shaped opening (12) is cut when the thread (15) is pulled after insertion of the biopsy needle, a sample (22) is efficiently collected into the hollow needle section (11).
