The invention discloses a fluorescent modified nanometer SiO2/fluorine-containing polymer ultraviolet-curable coating. The ultraviolet-curable coating is prepared from the following ingredients in percentage by weight: 15%-20% of fluorescent SiO2 nanometer particle, 40%-50% of fluorine-containing acrylic resin solution, 10%-15% of active diluted monomer, 10%-20% of xylene, 2%-7% of ultraviolet light initiating agent and 1%-5% of assisting agent. The invention further discloses a preparing method of the coating. The coating has super-hydrophobicity performance and self-cleaning performance, a contact angle between the coating and water exceeds 140 degrees, and fluorescence of the coating can provides a detecting method which is simple and easy to operate for using safety and using reliability of an electronic product.