Repeated load creep tests were employed at interim loading mode under four stress le-(vels,) three temperature levels and two air void levels.The curve of permanent deformation of specimen and loading numbers were obtained.In the mean time,the parameters of the permanent deformation,such as vertical and transverse flow number, vertical plastic strain,the ratio of vertical plastic and elastic strain,were also obtained.The test results show that high contacting pressure of vehicle under heavy load will speed up the transverse flowing deformation and rutting development of the pavement,the increase of vehicle axial load influences the pavement rutting much more than the temperature changing.