The invention relates to a coating system for an aerial aircraft. The coating system consists of an anti-corrosion coloring bottom coating and a weather-resistant transparent surface course coating matched in use, wherein the bottom coating consists of a component A1 and a component B1 in a mass ratio of (4-6): 1 and the surface course coating consists of a component A2 and a component B2 in a mass ratio of (1-4): 1; the component A1 comprises 15-30% of hydrogenated terpinene-maleic ester type epoxy resin, 2-10% of modified resin, 10-20% of coloring pigments, 10-20% of an environment-friendly anti-corrosion pigment, 5-15% of filler, 0.5-1% of auxiliaries and the balance of a solvent; the component B1 comprises 3-15% of liquid epoxy resin, 5-25% of polyamine with a primary amine and the balance of a solvent; the component A2 comprises 50-80% of polyhydric alcohol resin, 1-4% of auxiliaries and the balance of a solvent; and the component B2 comprises 60-90% of aliphatic polyisocyanate and the balance of a solvent. The coating system is light, good in comprehensive performance and time-saving in construction.