Based on the study of the mechanism affecting the geometric relationship of wheel rail rolling contact,the effects of the change rate of the lateral displacement and the yaw angle on the creep force/rate between the wheel rail contact particles and the distribution of the stick slip area of the contact spot were analyzed by using the numerical calculation method.The results show that the change rate of the lateral displacement and the yaw angle has an important influence on the creep characteristics of wheel rail rolling contact.With the increase of the change rate of the lateral displacement,the lateral creep force/rate and the creep force density between the wheel and rail contact spots are increased,while the sliding area is increased gradually,and the area of the adhesion zone is decreased gradually.Therefore,the measures of increasing the adhesion properly should be considered when the train is accelerating.With the increase of the change rate of the yaw angle,the longitudinal creep force/rate and the creep force density between the wheel rail contact spots are increased,while the transverse creep force/rate and the creep force density are decreased.The area of the slip zone on the contact spot is increased gradually until the tangential force of the contact spot reaches saturation and is in the full slip state.