Protection finish paint for wind power blade and preparation method of protection finish paint

The invention discloses a protection finish paint for a wind power blade, which comprises a component A and a component B according to a mass ratio of 7-10:1-4, wherein the component A comprises 30-60 percent by mass of modified hydroxylated acrylic resin used as the varnish base, 0.1-0.5 percent by mass of defoaming agent, 0.1-0.5 percent by mass of foam-removing agent, 0.1-0.5 percent by mass of adhesive force promoting agent, 0.5-2 percent by mass of anti-ageing agent, 1-3 percent by mass of abrasion-resistant assistant, 3-8 percent by mass of delustering agent, 0.5-2 percent by mass of wetting dispersal agent, 0.5-2 percent by mass of thixotropic agent, 5-35 percent by mass of organic solvent I and 18-35 percent by mass of titanium white; and the component B comprises 70-95 percent by mass of curing agent and 5-30 percent by mass of organic solvent II. The invention also discloses a preparation method of the protection finish paint for the wind power blade.