The invention provides a surface anti-
fog apparatus and a preparation method thereof, wherein the surface of a substrate is etched to obtain a substrate having a rough structure on the surface, and the etched substrate is immersed in a hydrophobic solution to prepare the surface anti-
fog apparatus. According to the present invention, the substrate is etched by using a
plasma etching method, such that the surface of the substrate is subjected to the activation treatment, the micro-nano rough structure is constructed on the surface, the hydrophobic substance can be bonded on the activated
substrate surface through the
chemical bond, and the
bonding strength between the hydrophobic substance and the substrate is good so as to prolong the service life of the surface anti-
fog apparatus; and thesurface anti-fog apparatus of the present invention can be used for vehicle windshields, motorcycle helmet lenses, bathroom lenses, door and window glasses,
eyeglass lenses, agricultural greenhousesand other surfaces easily
fogging in the case of
temperature difference with the external environment, such that the inconvenience to daily life or production due to the
blurred vision caused by the surface
fogging during the use can be prevented.