In order to eliminate the distortion of dynamic shear rheometer （DSR） due to the influence of instrument inertia in oscillation test， the substitution of DSR test results and Brookfield viscosity （BV） results were studied by Arrhenius model and Cox-Merz relationship. The results show that the Arrhenius model has a good fitting effect on the complex modulus of asphalt. The alternative method of the shear modulus by Brookfield viscosity can effectively eliminate the error of similar elastic effect caused by the inertia of the instrument in the high temperature section of the viscoelasticity test， and eliminate the misunderstandings about the viscoelastic response of materials.