From the viewpoint of friction-coupling self-excited vibration of a wheelset-track system causing wear-type rail corrugation, a finite element model of a wheelset-track system when a vehicle negotiates a tight curve at a steady state is established, which includes a wheelset, two rails and a series of sleepers. The motion stability of the model is analyzed using ABAQUS package. The study emphasis is laid on the effect of friction coefficient and negative creep force-creepage slope on rail corrugation. Results show that the friction coefficient has a large effect on self-excited vibration of a wheelset-track system. It is found that when the friction coefficient , wear-type rail corrugation can be eliminated. The negative creep force-creepage slope has a great effect on wear-type rail corrugation.