Abstract: In order to study the basic properties of petroleum asphalt and the pavement performance of mixtures on Road 90 A in Tianzhize Xinjiang, this paper adopts tests of the basic properties, high temperature rutting, low temperature bending, immersion Marshall and freeze-thaw splitting. The results show that all the basic property indexes of the petroleum asphalt on 90 A meet the technical requirements. The petroleum asphalt mixtures on 90 A have good high temperature stability, low temperature crack resistance and water damage resistance. The dynamic stability value of the mixtures is far greater than the standard value. The flexural tensile strength and flexural stiffness modulus are 8.5 MPa and 2 608 MPa respectively, and the flexural tensile strain is 3 259 με. The residual stability of the immersion is 86.6% and meets 75% of the standard requirements. The freeze-thaw splitting tensile strength ratio is 82.1%, which meets not less than 70% of the specification requirements. The petroleum asphalt on 90 A road has good high temperature, low temperature and anti-aging properties, which can effectively prolong the service life of the asphalt pavements in Xinjiang.