Based on the viewpoint of wheelrail frictional selfexcited vibration causing rail corrugation,the influence of fastener structural parameters on wheelrail friction selfexcited vibration in sharp curved track supported by vanguard fasteners was studied.A multibody dynamic model of vehicletrack system was established according to the filed measurement,which was used to verify the saturation of creep force between the wheel and rail when a train passed through the smallradius curve track supported by vanguard fasteners.A finite element model of leading wheelsetrail system was established based on the dynamic model.The frictional selfexcited characteristic of wheeltrack system was analyzed by using complex eigenvalue analysis.The predicted unstable vibration frequency of wheeltrack system is consistent with the vibration frequency that inducing the rail corrugation,which verifies the correctness of the finite element model of leading wheelsetrail system.The control variable method was used to study the influence of fastener structural parameters on the friction selfexcited vibration.The results show that the possibility of wheelrail friction selfexcited vibration is slightly increased with the increase of the vertical stiffness of the fastener,and decreased significantly with the increase of the vertical damping.With the increase of the lateral stiffness and lateral damping of the fastener,the possibility of wheelrail friction self〖HJ1.6mm〗excited vibration is decreased.Therefore,the increase of vertical damping,lateral stiffness and lateral damping can help to suppress the rail corrugation on the sharp curved track supported by vanguard fasteners.