A transparent planar heating film includes metal nanoparticles that are disposed on at least a portion of a transparent adhesive film; and a transparent electrode that is completely covered by the transparent adhesive film and has a conductive surface that is laminated to and in direct contact with the metal nanoparticles via the transparent adhesive film. The heating temperature of the transparent planar heating film is a maximum of at least two times higher at the same power consumption than that of conventional planar heating films. Both the transparent adhesive film and the transparent electrode may be flexible so that the transparent planar heating film is flexible. In the transparent planar heating film, the metal nanoparticles may be bonded to desired locations on the conductive surface of the transparent electrode enabling selective heating.