A method of making a carbon nanotube bundle is provided. A plurality of carbon nanotubes is provided. A plurality of sulfur nanoparticles is disposed on the plurality of carbon nanotubes to form at least two visible carbon nanotubes. The at least two visible carbon nanotubes are stacked to form a carbon nanotube bundle preparation body. The plurality of sulfur nanoparticles in the carbon nanotube bundle preparation body is removed to obtain the carbon nanotube bundle.