By means of a β-plane quasi-geostrophic model and a high resolution f-plane quasi-geostrophic model,six experiments are carried out to investigate the effects of initial tangential wind velocity profile on typhoon track and intensity.Results show that the profile with a narrow region of peak value of tangential wind and a smaller radius of maximum wind is favorable to a north-western track and the maintenance or enhancement of typhoon;on the contrary,a north-turning track and weakening of typhoon happen.