A vein harvesting device for harvesting a vein in a body includes a tubular member, an elongated dissecting member positioned inside the tubular member to dissect a tissue so that the tubular member axially overlaps the elongated dissecting member, wherein the tubular member is rotatable relative to the dissecting member, and an elongated cutting member positioned on the elongated dissecting member to cut a vessel and rotatable relative to the elongated dissecting member.