Abstract: Asphalt anti-fatigue performance evaluation method and index were studied,based on dynamic shear test and time-sweep test of 8 kinds of asphalt and fatigue test of mixture by these asphalt.Compared with dynamic shear test,time-sweep test is suitable for asphalt fatigue performance evaluation.But time-sweep test is not suitable for performance evaluation of modified asphalt which uses large particle size modifiers,such as asphalt rubber.Reduced dissipated energy ratio was recommended as the index to analyze data of time-sweep test and to evaluate asphalt fatigue resistance.