The invention discloses a water-impact-resistant super-hydrophobic coating and a preparation method thereof. The coating is formed by curing fluororesin, a first low-surface-energy filler, a second low-surface-energy filler and an isocyanate curing agent at the room temperature; the first low-surface-energy filler and the second low-surface-energy filler are respectively combinations of nanorods and nanoparticles or are nanoparticles with different particle sizes, and the particle size ratio of the first low-surface-energy filler to the second low-surface-energy filler is greater than 10. By adopting the combination fillers of the nanorods and nanoparticles or the combination fillers with the large particle size ratio, a surface microstructure of the prepared coating more easily keeps a stable Cassie model, and droplets can still fall on the surface of the coating under impact. Moreover, since the contact area between the nanorods (line) or large-particle-size fillers and a fluororesinmatrix is large, the large resistance needs to be overcome during wear shedding, so that the coating has good wear resistance, and the durability of the super-hydrophobic effect can be ensured.