Passive daytime radiative cooling (PDRC) technology has received a lot of attention because it does not require external energy and is green and pollution-free. A polydimethylsiloxane (PDMS) -based superhydrophobic radiative cooling film was fabricated by casting and drying of PDMS/ZrO2 dispersion, followed by spray-coating of PDMS/SiO2 dispersion. The ZrO2 particle size in the casting solution and the SiO2 dosage in the spraying solution were optimized to made the film have self-cleaning property with a CA of 156.6 ° ± 2 ° and SA of 0.3 ° ± 0.1 °, the reflectivity of the film in the solar band (0.3-2.5 μm) and the infrared emissivity in the atmospheric window (8-13 μm) reached 95.3% and more than 90%, respectively. The average cooling effect of the film was 9.99 ℃ lower than the ambient temperature under direct sunlight. The self-cleaning property of the film can keep the film free from soil contamination and maintain the cooling performance. Moreover, the film exhibited excellent mechanical properties, friction resistance, chemical stability of superhydrophobicity and cooling performance after immersion in different pH solutions or UV irradiation.