This article summarizes the development of CNPC ethylene business in 2024, including the completion of indicators such as ethylene production, ethylene yield, diene yield, processing loss rate, and fuel & power energy consumption of various ethylene production enterprises, as well as the completion of raw material optimization, long-term operation, maintenance, and technological transformation measures. The key work arrangement for the long-term optimization operation of the company's ethylene plant in 2025 has been proposed.