A super-hydrophobic surface of compound PRTV coating coupled with the hydrophobic-modified nano-silica particles was prepared via mechanical blending method. The effect of adding amount of nano SiO2 on hydrophobic modification of PRTV coating was studied. The relations between the microstructure of sample’s surface and its water contact angle were argued in this study. The results show that a super-hydrophobic compound coating can beprepared by mixing the hydrophobic-modified nano-silica particles with the PRTV coating via mechanical blending method. The maximum water contact angle of the modified PRTV coating increased from 106° to 150°.