UV-2908 is a new type of light stabilizers, light stabilizers stericparabens. Experiments show that the stericparabens, antioxidants and high molecular weight light stabilizers for resistance aniline compositionstable system, make polyolefin with excellent long-term thermal stability, light stabilizers is quite satisfactory,and no negative impact on the dithioester compounds such as heat stabilizers in polyolefins used together to achievethermal stability two effects and optical stability requirements. UV-2908 and dithioesters(STDP)and HALS and can significantly improve long-term thermal stability in the moderate high-temperature injection molding polypropylene, may also improve long-term UV stability of polypropylene,and can reduce the amount of stabilizer.