A kind of anti-oxidation coating suitable for honeycomb-enhanced low-density thermal protection material was studied.The processing property，microstructure of surface，heat resistance of the anti-oxidation coating were investigated，and the ablative property was assessed by muffle furnace ablation test，plasma ablation test and radiation heating test.The results indicates that the solvent content of anti-oxidation coating should be in range from 25% to 75%，its pot-life is greater than 165 min and its thickness is less than 300 μm.The thermal stability of the phenolic resin STN-1 coating is better than that of the methylphenyl silicon rubber 218-1.After being exposed to 800 ℃/10 min，a relatively obvious ceramicization phenomenon occurs in the coating.Under the conditions of 1 MW/30 s and 1.5 MW/30 s，a hard and dense carbon layer is formed.Under the radiation heating environment of 2 000 ℃ for 300 s，the back surface temperature of the honeycomb-reinforced low-density heat resistance material with coating is reduced by 10 ℃，and the strength of the carbon layer is higher.