A biopsy needle (100) according to the present invention includes a tubular outer needle (110) having a needle tip (111) at one end in a longitudinal direction； and a pillar-shaped inner needle (120) configured to be inserted into and movable in the outer needle (110) in the longitudinal direction of the outer needle (110). The inner needle (120) includes: a distal end portion having a needle tip (121) at a distal end and having an inclined surface (122) inclined toward the needle tip (121) at the distal end； a notch portion (123) including a notch on a side surface closer to a proximal end side of the inner needle than the inclined surface (122) to collect body tissues； and a groove (124) leading from the distal end portion to the notch portion (123).
