In recent years, superhydrophobic coating has attracted people's attention. It can give the material surface unique self-cleaning, anti-pollution and other characteristics, so it has been widely used in industrial production and life. The reason why the superhydrophobic coating can not be dripping is that the micro-nano composite layer structure of the surface makes the contact area with water very limited, so the chemical reaction and chemical bonding with water are inhibited. When the droplets roll on the surface of the coating, the pollutants can be easily carried away. By scanning electron microscope (SEM) observation, the micro-nano composite hierarchical structure mainly refers to the surface of uniformly distributed micron-scale prominences, and around these prominences are also dispersed nano-scale secondary structures. Although seemingly magic, but this kind of special concave and convex design are not rare in nature, such as the surface of the lotus leaf is a typical hydrophobic structure, but the composition of lotus leaf is carbon-based material, the inorganic material such as glass, if you want to in the real experiment to obtain hydrophobic effect, similar to that of the present method all needs to use elements of the material such as carbon, fluorine, and Organic - inorganic hybrid coating with micron - nanometer rough structure is formed.