The invention belongs to the technical field of a new chemical material, and in particular relates to a high-durability super-hydrophobic self-cleaning 
coating material and a preparation method thereof. The 
coating material of the invention is prepared by curing and 
drying nanoparticles with photo-catalytic activity, a low-surface-free-energy 
polymer and a cross-linking agent at the 
room temperature, wherein the low-surface-free-energy 
polymer consists of one or more of polysiloxane 
fluoride, dimethyl 
silicone polymer and polyphenylene methyl 
siloxane, which contain active groups, such as hydroxyl 
alkoxy group, carbon-carbon 
double bond, 
silanol group, siloxy group, and the like; the cross-linking agent is 
hydrogen-containing 
silicone oil or aminosilane; and the 
mass content of the photo-catalytic nanoparticles in the 
coating ranges from 10 to 60 percent. The coating is formed into a micro-
nanostructure by 
nanoparticle self-organization; a super-hydrophobic self-cleaning coating with 
lotus effect is prepared from the coating and a cross-linked filming matrix with low 
surface energy; the persistence of a 
lotus-shaped super-hydrophobic characteristic of the coating is realized by using the photo-
catalytic decomposition characteristic of an organic 
pollutant for the nanoparticles; and thus the material is suitable for large-area construction and has high 
weathering resistance andprominent self-cleaning characteristic.