Hydrogen storage is a bridge connecting hydrogen production and hydrogen utilization, and plays an irreplaceable role in the development of hydrogen energy. At present, the types of hydrogen storage bottles for vehicles at home and abroad are mainly fiber-wound aluminum liners (type three) and fiber-wound plastic liners (type four). With the rapid development and industrialization of hydrogen fuel cells and electric vehicles, IV Small hydrogen storage cylinders are becoming a research hotspot all over the world because of their light weight and fatigue resistance. The carbon nanotube fiber independently developed and produced by Xenwan Technology can replace traditional resin materials as the inner liner of the new type IV hydrogen storage bottle, filling the gap in the domestic new type IV hydrogen storage bottle winding fiber technology.