The low-temperature rapid recoating process of the ablative anti-heat coating was investigated.Several approaches for improving the adhesion of the coating,rapidly solidifying,and controlling the excess substance were proposed according to the pre-flight state of the aircraft.The wind tunnel test shows that the ablation coating has a small amount of ablation and good heat resistance,with a maximum surface and back temperature of 580 ℃ and 64 ℃,respectively.The coating deposited with this technology is tested successfully in the aerodynamic environment for many times,demonstrating that this recoating process has good process stability.