Due to the deflection of thinwalled component under the force,it has a certain influence on the elastohydrodynamic lubrication(EHL),which leads to a large error on the original calculation using the classical contact model.A kind of EHL line contact model by considering the deflection of the tablet was put forward,which couldan exactly reflect the deflection of thinwall plate deformation on the influence of EHL.Thinwall plate deformation model was established by finite element simulation software to analyze the effect of speed and load parameters on the performance of line contact EHL,on the basis of the deflection deformation.The results show that the deformation of the thin wall plate has an effect on the lubrication,the pressure of the oil film is decreased,and the range of the central film thickness distribution is increased but the film thickness is decreased.With the change of the speed and load,the pressure and the thickness of the oil film are changed accordingly.When other conditions is the same,the central oil film thickness is increased with the increasing of velocity,and the central oil film area is also increased.The velocity parameter has a great influence on the oil film pressure,the oil film pressure is increased with the increasing of velocity,and the necking phenomenon appears.The oil film pressure is increased with the increasing of the load,while the oil film thickness is decreased.