A needle tip section (34) of a biopsy needle comprises: a first chamfer surface (36) constituted by a flat surface extending in a direction crossing the axis (X1) of a tubular section (31); a second chamfer surface (37) disposed angularly adjacent to the first chamfer surface (36) and constituted by a flat surface adjacent to the inner circumferential surface (33) of the tubular section (31); a third chamfer surface (38) which is disposed angularly adjacent to the first chamfer surface (36) on the opposite side of an opening (35) from the second chamfer surface (37), and which is constituted by a flat surface adjacent to the inner circumferential surface (33) of the tubular section (31); a first boundary line (40) which is a boundary between the first chamfer surface (36) and the second chamfer surface (37); and a second boundary line (43) which is a boundary between the first chamfer surface (36) and the third chamfer surface (38). The first boundary line (40) and the second boundary line (43) are non-parallel lines the distance between which gradually increases from a second end (31b) to a first end (31a) in the axis (X1) direction of the tubular section (31).L'invention concerne une section de pointe d'aiguille (34) d'une aiguille de biopsie qui comprend : une première surface de chanfrein (36) constituée d'une surface plate s'étendant dans une direction croisant l'axe (X1) d'une section tubulaire (31) ; une deuxième surface de chanfrein (37) disposée de façon angulairement adjacente à la première surface de chanfrein (36) et constituée d'une surface plate adjacente à la surface circonférentielle interne (33) de la section tubulaire (31) ; une troisième surface de chanfrein (38) qui est disposée de façon angulairement adjacente à la première surface de chanfrein (36) sur le côté opposé d'une ouverture (35) à partir de la deuxième surface de chanfrein (37), et qui est constituée d'une surface plate adjacente à la surface circonférentielle interne (33) de la sectio