Due to the turbulence, shock/expansion wave, jet, shear/boundary layer and their mutual interference, the flow structure of scramjet engine is extremely complex, and accurate numerical simulation is very difficult. In order to solve this problem, a new type of k − ω BSL/SST two-equation turbulence model was proposed by analogy with the Menter k − ω BSL/SST two-equation turbulence model construction method. The results show that the prediction accuracy of the new k − ω BSL/SST two-equation model is comparable to that of the original Menter k − ω BSL/SST model in the free shear region. In the turbulent region, especially in the strong inverse pressure gradient region, the prediction accuracy of the new k − ω BSL/SST-like model is better than that of the original Menter k − ω BSL/SST model. In the simulation of complex flow fields covering free shear and strong inverse pressure gradient, the prediction accuracy of the new k − ω BSL/SST-like model is better than that of the original Menter k − ω BSL/SST model and the k − ω Kok TNT model, which is more suitable for engineering applications.