A touch screen, a fabrication method thereof and a display device are provided. The method comprises: forming a touch electrode (2) on a light emission side of a display panel (1) after the display panel is formed; and forming an organic transparent insulation layer (5) on the light emission side of the display panel (1) where the touch electrode (2) has been formed by using a coating process. An absolute value of a difference between a refractive index of the organic transparent insulation layer (5) and a refractive index of the touch electrode (2) is less than or equal to a predetermined value. Therefore, a problem of poor shadow elimination and a problem of white stripes in the touch screen are decreased without using a shadow elimination glass, a problem that the touch screen is damaged by high-temperature is avoided, and moreover, a formation apparatus for the touch electrode is prevented from being polluted by the organic transparent insulation layer.