With different materials of gaskets, friction coefficient between reeds is also different, so performance analysis result is not accurate when contact friction between steels is only considered in the design process. The VonMises stress and stiffness characteristics of leaf spring were analyzed with the nonlinear contact function of ANSYS software, and the stress distribution and load-deformation curve were obtained. Meanwhile, the test of taper-leaf spring was performed. The results have shown that the difference of stress between calculated and tested value is relatively small, and the calculated values of stiffness basically agree well with tested one, and the relative error is less than 5%. This indicates that finite element analysis(FEA) can accurately simulate the contact and friction and reflect the forces and deformations, and can be used to discuss the influence of different coefficients of friction between spring leaves on the equivalent stress and the average stiffness of the taper-leaf spring.