Abstract: In order to explore a simple preparation method of superhydrophobic coating, stearic acid was used to hydrophobically modify nano-TiO₂, the hydrophobic nano-TiO₂ and water-based polyurethane（WPU） were used as the main raw materials, and anhydrous ethanol was used as the dispersant, and nano-TiO₂ superhydrophobic coating was prepared by two-step spraying method. The wettability test results showed that the contact angle of the coating was 153.5°, and the rolling angle was 4.7°. The coating was microscopically characterized by an infrared spectrometer（FT-IR） and scanning electron microscope（SEM）. The results showed that stearic acid introduced low surface energy —CH₂ and —CH₃ groups on the surface of nano-TiO₂, and the coating surface had micro-nano binary rough structure. The research results showed that the coating preparation process was simple, had the good self-cleaning ability and superhydrophobic properties.