Abstract: In order to solve the problem of thermal oxidation and photooxidative aging of styrene-butadiene-styrene triblock copolymer（SBS） modified bitumen, polyolefin elastomer（POE） was used as modifiers in this study, and 2%, 3%, 4% and 5% of SBS modified bitumen were compound modified to develop a new type of high-performance POE/SBS bitumen. Through Brookfield viscosity test（RV）, frequency sweep（ FS） and temperature sweep（ Te S）, multiple stress creep recovery test（ MSCR）, linear amplitude sweep test（LAS） and bending beam rheological test（BBR）, the rheological properties of POE/SBS composite modified bitumen before and after aging were studied and evaluated. The results showed that the addition of POE significantly improved the high-temperature deformation resistance and elastic recoverability, while had a negative effect on the low temperature and fatigue performance of SBS modified bitumen. This study indicated that considering all the performance requirements of modified bitumen, the optimum mix proportion of POE/SBS modified bitumen was as follows: 4%SBS+3%POE+0. 1% Sulphur.