An apparatus for applying carbon nanotube film is provided. The apparatus includes a supplier, a film application device, a cutter and at least one mechanical arm. The supplier is configured for locating a carbon nanotube array, which can supply a continuous carbon nanotube film to the film application device. The film application device includes a rotation axis and a rotator moving about the rotation axis. The rotator has a plurality of support surfaces opposite to the rotation axis. The plurality of support surfaces are used for applying at least one pre-laid supporter. The cutter is configured for cutting the carbon nanotube film. A method for applying carbon nanotube films using the apparatus is also provided.