Abstract: Based on the life cycle inventory of ethylene production, the life cycle impact assessment was performed, and the overall impact indicator was 1.12×10－10 a－1. According to the life cycle interpretation, the impact of the depletion of non-renewable resources was more than 58% in the overall impact. The life cycle impact assessment of individual pollutants showed that the direct emissions of ethylene and NOx were the main sources of environmental burden, and their shares were both about 1/4.