A method for making a carbon nanotube film, the method comprising the following steps of: (a) supplying a substrate; (b) forming at least one strip-shaped catalyst film on the substrate, a width of the strip-shaped catalyst films ranging from approximately 1 micrometer to 20 micrometers; (c) growing at least one strip-shaped carbon nanotube array on the substrate using a chemical vapor deposition method; and (d) causing the at least one strip-shaped carbon nanotube array to fold along a direction parallel to a surface of the substrate, thus forming at least one carbon nanotube film.