Abstract: Two-dimensional,stationary,compressible boundary layer with zero pressure gradient is numerically simulated with GAO-YONG turbulence model.Employing staggered grid arrangement,SIMPLE/SIMPLER code and a second-order QUICK scheme are used.All the results verify that the GAO-YONG equations,without using empirical coefficients and wall functions,may successfully simulate the compressible turbulent boundary layer (Ma=0.2～2.4).The calculation successfully simulates the flow,including the natural transition process,and predicts the fundamental properties of the boundary layer,such as C_f,the logarithmic law, and the defect law,etc,which are finely close to the experimental data.All the results further verify the adaptability of the turbulence model to real turbulent flow.