Abstract: Investigates experimentally the blacktop performance of high-speed way utilizing recycled asphalt mixture, as well as the cause of damage to blacktop and its aging mechanism. Discusses and analyzes in detail the sieving result of outspent asphalt mixture, properties of aggregate and especially the properties of the asphalt mixture in which the reclaiming agent has been added in the outspent one. The results show that the blacktop performance can be improved efficiently up to existing technical standard if adding properly the reclaiming agent in the outspent asphalt mixture. Some key points are suggested for designing recycled asphalt mixture as blacktop, which may be referable to the design and construction of utilizing recycled asphalt mixture.