In order to study the effect of long term aging on the surface energy of asphalt and its adhesion to aggregate, base asphalt(BA), styrene butadiene styrene(SBS) modified asphalt(SBS MA), rubber asphalt(RA), high viscosity asphalt(HVA), and three kinds of lithologic aggregates, namely limestone, basalt and diabase were chosen. Based on the contact angle test and surface energy calculation, the surface energy of asphalt, the adhesion work with aggregate before and after long term aging were analyzed. The results show that long term aging increases the contact angle between asphalt and water, improves the hydrophobicity of asphalt. The contact angle before and after aging is BA>SBS MA>RA>HVA. Long term aging reduces the surface energy of asphalt and its adhesion to aggregate, and the surface energy and adhesion work before and after aging are HVA>RA>SBS MA>BA. After long term aging, the surface energies of the four asphalts, BA, SBS MA, RA and HVA, were reduced by 198%, 743%, 647%, and 322%, respectively. Except for the base asphalt, the adhesion work of SBS MA, RA and HVA decreased by 371%, 313%, 201% on average. Long term aging has the most obvious effect on SBS modified asphalt.