A biopsy needle includes: an outer needle including a first needle tip an inner needle including a second needle tip, an inclined surface, and a notch portion and a moving mechanism configured such that a maximum distance by which the outer needle is slidable in a distal end direction is set to be longer than a maximum distance by which the inner needle is slidable in the distal end direction such that the outer needle and the inner needle switch between a first state, in which the second needle tip is positioned closer to a distal end than the first needle tip, and a second state, in which a position of the first needle tip is located closer to the distal end than a proximal end of the inclined surface and a distance between the first needle tip and the second needle tip is shorter than a distance between the first needle tip and the second needle tip in the first state.
