介绍了乙烷裂解制乙烯工艺技术特点与国内外乙烷裂解制乙烯产业现状，重点对美国乙烷出口情况、未来发展趋势及我国采用进口乙烷制乙烯项目的投资现状及有关问题进行了分析。乙烷裂解制乙烯具有生产成本低、乙烯收率高、装置投资少等优势，是北美和中东地区生产乙烯的主要工艺路线；面对美国乙烷出口以及我国乙烯市场产能不足、需求旺盛的现状，我国企业加快布局进口乙烷裂解制乙烯项目很有必要，但也存在产业链复杂、进口乙烷原料不足等风险，建议国内企业谨慎投资，防止项目投资过热带来的原料供给风险与经营风险。

The technical characteristics of ethylene production via ethane cracking route and the industrial situation of this route in China and in the world are summarized and reviewed.In particular, the current situation and future development trend of ethane exports from the United States, and China's current investment status and the related problems in ethylene production projects using imported ethane are analyzed.Ethylene production through ethane cracking route has advantages such as lower production cost, high ethylene yield, less equipment investment, etc.It is the main process route for ethylene production in North America and the Middle East regions.Given the current situation of U.S.A's ethane exports and China's ethylene supply deficit, it is necessary for China's companies to speed up constructing ethylene projects using imported ethane, but there may be also risks such as sophisticated industrial chain and insufficient supply of imported ethane.Chinese enterprises are suggested to invest cautiously so as to prevent from the short raw material supply and the operation risks brought by overheated investment.