In order to solve the problems of high brittleness and poor adhesion of the existing thermal-protection coating for the inner wall of launch canister， silicone modified epoxy resin as the matrix， a variety of high-temperature resistant fillers and polyamide as the curing agent were used to prepare the thermal-protection coating. Its flame resistance， heat resistance， "three-proofings" and thermal aging performance had been fully characterized and analyzed. The results show that the coating can withstand a long-term high temperature of 200~300 ℃， ablation at 900 ℃ within 10 s， and its adhesion and "three-proofings" are superior.