A light-sensitive type touch panel, a display device and a touch positioning method are provided. The light-sensitive type touch panel includes: a first thin film on a support substrate; a second thin film opposite to the first thin film in a direction perpendicular to the support substrate; a fluid layer, which is between the first thin film and the second thin film in the direction perpendicular to the support substrate, adjacent to the first surface, which is close to the first thin film, of the second thin film, and has a refractive index smaller than that of the second thin film; a light source configured to emit incident light which is incident to the second thin film; and a light sensor on a side, away from the second thin film, of the first thin film.