Improvement of the robustness of superhydrophobic surface is crucial for the purpose of achieving commercial applications of these surfaces in such various areas as self-cleaning，water repellency and corrosion resistance.We have investigated a fabrication of polyvinyl alcohol（PVA）/silica（SiO2）composite polymer coating on wooden substrates with super repellency toward water，low sliding angles，low contact angle hysteresis，and relatively better mechanical robustness.