The paper Studys the optimum asphalt mixture ratio with gradation, changes in laws powder type, powder content of selection by SMA-10 hot-mix asphalt rubber Marshall compaction experiment。The results show：The best mix asphalt content and gradation key sieve through rate higher correlation， Rubber asphalt appropriateness of using coarse graded because of rubber asphalt filling powder particles have a role；Best Whetstone ratio decreases with the powder particle size tended to increase，When the particle size is reduced to a certain extent，best rubber asphalt content was no longer significant increasing trend，it should adopt the 60 mesh powder；Powder ash and mix volume indicators have good correlation，Mixing high powder dosage difficult，Powder dosage range should not exceed 24%，Whetstone ratio shoud be in the range of 8.5 to 9.5。