Aerodynamic elastic foil gas bearing is widely used in aeroengine,it plays an important significance in improving engine efficiency and reliability,and reduce fuel consumption.The development of aerodynamic elastic foil gas bearing was summarized,and the structure characteristics and applications of aerodynamic elastic foil gas bearing in aeroengine were introduced.The performance evolution and theoretical study,and the advantages and disadvantages of aerodynamic elastic foil thrust bearing were discussed.The lubrication modeling method,lubrication solution method and convergence control method of different foil gas bearing were compared.The potential application of flexible foil aerodynamic bearing in aeroengine rotating machinery was pointed out.The research direction of aerodynamic bearing technology was put forward,including the theoretical modeling of foil dynamic pressure gas bearing and the solution method of the model,foil aerodynamic bearing experimental research and test bench building method,foil dynamic pressure gas bearing design and manufacturing,bearing surface coating technology and foil dynamic pressure gas bearing technology applications,and so on.