A silicone polymer modified by epoxy resin was synthesized via the reaction of a liquid epoxy resin with a α,ω–dihydroxyl silicone under catalysis of dibutyltin dilaurate. Chemical structure of the modified silicone polymer was characterized by FT–IR, while heat-resistant of the polymer was tested by the thermogravimetry. The modified silicone polymer containing 70% (mass fraction) α, ω–dihydroxyl silicone shows excellent heat-resistant, which possesses residue of more than 30% (mass fraction) when heated at ≥ 500℃. A peelable heat-resistant coating cured at room temperature was used as anti-spatter coating under laser drilling, which was prepared with the modified silicone polymer as the film-former. The anti-spatter property of the coating on the engine blades was tested by exposing to laser drilling under air blowing conditions. The coating exhibits optimizing anti-spatter property which keeps adhered to the substrate after the laser drilling process. It has played a very good protective role and effectively improved the quality of laser drilling of engine blades.