Abstract: Ten different kinds of grading about limefly ash bound macadam were selected for a test 7 d,14 d and 28 d,then the unconfined compressive strength was measured after being maintained 30 d,60 d,and 90 d.The result showed that limefly bound macadam had strength regenerating peculiarity.Then the main factors of the influences on its regenerating compressive strength were made.At the same time,the features of regenerating compressive strength of limefly ash bound macadam were also analyzed.The result showed that the regenerating compressive strength was lower along with the size of aggregate’s gain,and decreased along with the breakage’s period of increase.