Liaohe 90# asphalt was modified by SBS and C9 petroleum resin. The temperature sensitivity, high temperature stability, low temperature crack resistance and anti aging properties were studied by regular experiments, beam bending rheological(BBR) experiments. The electron microscopy was used to observe the structure of the modified asphalt. The experimental results show that when the mass fraction of the modifier is selected as 5%, both the temperature sensitivity performance and the high temperature performance of SBS C9 petroleum resin modified asphalt are superior to those of SBS modified bitumen. However, the difference of low temperature performance and anti aging properties is small. In addition, the C9 petroleum resin shows the ability to reinforce the binding force between SBS and asphalt and improve the constraints of SBS to asphalt, which can be used to form a new stable network macromolecular structure.