Using ZrO2, and SiO2 Sol as coating materials, a multilayer wavelength-selective high reflective (HR) coating was deposited by the way of sol-gel spinning technique. A new kind of ZrO2 sol was prepared to lower the layer number and to increase the laser damage threshold of A filter. The adding of Polyvinylpyrrolidone (PVP) was added into ZrO2 Sol to decrease the porosity and then to enhance the refractive index of ZrO2 layer as well as to increase the coating strength. At the peak position, the reflection more than 98% can be easily achieved with 21 layers. The laser damage threshold was as high as 19.9J/cm(2) (3 ns, 1064 nm).