Most machine elements work under various environments such as higher and lower temperature in practice.In order to investigate the influence of the elements temperature on the lubricating performance of thermal elastohydodynamic lubrication (TEHL) with power-law non Newtonian model,a complete numerical solution for TEHL line contact with a power law non Newtonian model was obtained,the effects of elements temperature,the rheological exponent and the ambient viscosity of the lubricant on the lubricating performance were discussed,and the non-Newtonian and Newtonian solutions were compared.Results show that,similar to the Newtonian solution,the central film thickness is determined by the inlet effective viscosity which depends on the elements temperature no matter the rheological exponent is larger or smaller than one.As a result,the temperature effect of the elements can not be ignored for the TEHL with power-law non-Newtonian model.