The ASTMD3398-97 and the AASHTO TP56 methods were used to analysis the characteristic of the edges of gravel coarse aggregate with different particle sizes in Lhasa. Based on the standard Marshall test，immersion Marshall test，freeze-thaw splitting test，rutting test，trabecular bending test and the gray correlation theory，the gray correlation between the immersion residual stability，dynamic stability，strain energy density and the edge angle value of gravel coarse aggregate was established. The results show that the AASHTO TP56 method is better than the AASHTO TP56 method to get the characterization of the edge angle value. The influence of the angle value of gravel coarse aggregate on pavement performance of the asphalt mixture can be indicated as：low temperature performance > high temperature performance > water damage resistance. When the average angularity is 47.47%，and the percentage of uncompacted void is around 19.52%，the high temperature performance of asphalt mixture can be significantly improved by the angularity of gravel coarse aggregate. The angle value of coarse aggregate with particle size of 13.2-16 mm has the significant influence on the high and low temperature performance of gravel asphalt mixture. The water damage resistance of gravel asphalt mixture is significantly affected by the adhesion between asphalt and aggregate.