近年来国内乙烯产能剧增，副产大量的裂解C₉。阐述了国内裂解C₉产业链的现状和未来发展趋势。挖掘裂解C₉深度加工的增值潜力，提升裂解C₉产品附加值，对提高石脑油蒸汽裂解乙烯产业竞争力十分重要。目前国内裂解C₉下游产品同质化严重，各个企业应根据原料的性质和周围市场情况，加强资源的整合和利用，应注重综合利用技术的开发以及下游产业链的设计，实现差异化发展。

China has an increasing resource of cracking C₉ fractions as China's ethylene capacity soared in recent years.This paper introduces the current situation and development trend of China's C₉ production chain.Exploiting the value-added potential in processing deeply C₉ fractions and increasing the added value of C₉ fractions play an important role in improving the competitiveness of ethylene production via naphtha steam cracking.At present,the downstream products through processing cracking C₉ fractions are homogenized seriously in China.Each enterprise is suggested to strengthen the integration and utilization of resources according to the properties of C₉ fractions it holds and the conditions of market it locates,and pay attention to the development of comprehensive utilization technology and the design of downstream production chain in order to achieve differentiated development among C₉ fractions processing companies.