A light emitting diode includes a first semiconductor layer, an active layer, a second semiconductor layer and a third semiconductor stacked in that order; a first electrode electrically connected to the first semiconductor layer; a second electrode electrically connected to the second semiconductor layer. The light emitting diode further includes a carbon nanotube layer. The carbon nanotube layer is enclosed in the interior of the first semiconductor layer. The carbon nanotube layer includes a number of carbon nanotubes.