A vertical type nanotube semiconductor device including a nanotube bit
line, disposed on a substrate and in parallel with the substrate and
composed of a nanotube with a conductive property, and a nanotube pole
connected to the bit line vertically to the substrate and provides a
channel through which carriers migrate. By manufacturing the
semiconductor device using the bit line composed of the nanotube, cutoff
of an electrical connection of the bit line is prevented and an
integration density of the semiconductor device can be improved.