Based on the CMA-TYM model, through sets of sensitivity experiments, the sensitivities of the simulated moving track and intensity of Typhoon Hato (1713) to the boundary layer height h and momentum roughness z₀ in different life stages are studied. The experiment results show that the boundary layer height h from different parameterization schemes has significant influence on the moving track during the tropical storm stage, while there is no obvious influence on the moving track after Hato gets mature. The maximum 10-m wind speed near the typhoon center is not sensitive to the change of h, while the minimum sea-level pressure is very sensitive to the change of h. The study also finds that, in the early stage, it is not beneficial for the development of typhoon intensity whether h is too thin or thick. It shows that h is very important in the numerical simulation and prediction of tropical cyclones, especially in the early stage of Typhoon Hato. The influence of the change of momentum roughness z₀ on Typhoon Hato is mainly reflected in the typhoon intensification stage. The maximum 10-m wind speed near the typhoon center is sensitive to z₀ in the typhoon intensification stage, especially in the early stage of typhoon.