First,design the SMA mixture with coarse crumb-rubber and get the optimal asphalt content.Then,do the swell test and analyze the swell law of coarse crumb-rubberized asphalt concrete under the different coarse crumb-rubber contents and different environment temperatures.Based on the durability requirement of pavement,put forward the standard of swell of asphalt concrete.Then,study the mechanical performance of coarse crumb-rubberized SMA asphalt mixture in the lab.Analyze effect of the content of coarse crumb-rubber on the performance such as fatigue life,modulus and rut-resistance and put forward the suitable coarse crumb-rubber content.