Abstract: Three different coatings A, B and C were prepared on TZC molybdenum alloy surface by coating method. The A coating contains borosilicate glass, the B coating dopes MoSi₂ powder with A mass fraction of 15% on the basis of the A coating, and the C coating adds a small amount of Al powder on the basis of the B coating. The oxidation behavior of the coatings at 1200 ℃ was studied by heating furnace, X-ray diffraction analyzer and scanning electron microscope. The results show that the C coating has a good protection performance within 1 h of high temperature oxidation, and the oxidation resistance of the C coating after 2 hours is 69% higher than that without coating protection. After high temperature oxidation, the cross-section morphology of A coating and B coating is dominated by the loose structure of MoO₃ and TiO₂ alternately distributed. The addition of aluminum powder changes the phase composition of the oxide film, and the C coating forms a three-layer structure of the outer aluminosilicate, the middle cerium titanium oxide, the inner TiO₂ and molybdenum silicon compound, which makes it have excellent oxidation resistance.