TiAl based alloy is one of the most competitive materials for nickel-base superalloys for aeroengines due to its low density, high elastic modulus and high specific strength performance. In this paper, the research progress of high temperature oxidation resistant coatings on TiAl alloy is summarized based on Diffusion infiltration, Laser cladding, Double glow plasma Infiltration, Atmospheric plasma spraying, Physical vapor deposition and other preparation technologies. In addition, the research direction of realizing TiAl alloy application in advanced engine is put forward according to the high requirement of materials for continuous improvement of aero-engine performance.