Considering the effect of wear on lubrication state,a nonNewtonian fluid circular contact thermal elastohydrodynamic lubrication(EHL) model with wear land was built.Effects of the half width of wear land on the pressures,film thicknesses，temperatures and the friction coefficient were analyzed.The calculation results were comparison with Newtonian thermal EHL solution.Results show that,with the increasing of the half width of the wear land,the minimum film thickness is decreased obviously,and it always locates nearby the verge of the wear land and moves towards the inlet of the contact region.The central film thickness is increased linearly with the increasing of the half width of the wear land.Effects of the entrainment velocity,the load and the slideroll ratio on the film thickness is weak as the half width of the wear land increases.However,nonNewtonian properties have a great influence on the temperature and the friction coefficient.