The invention discloses an asphalt pavement aging simulating method. The method comprises the following steps: inquiring the climate and communication information of the area to be simulated, according to the climate and communication information, calculating the rutting equivalent temperature, UV accelerating factor, raining accelerating factor, and rutting accelerating factor; according to the service life of the simulated pavement, calculating the rutting time, UV radiation time, and spraying time; putting a rutting member into a pavement material life-cycle analysis instrument, starting the pavement material life-cycle analysis instrument to obtain a simulated aged member; and according to the analysis of the multifunctional pavement material life-cycle analysis instrument on the aged member and the weights of aging factors (rutting equivalent temperature, UV accelerating factor, raining accelerating factor, and rutting accelerating factor), obtaining the aging index of simulated member. The aging mode is controlled by a plurality of factors, and thus the simulation is more close to the actual situation of asphalt pavement.