随着美国肯德基停止使用反式脂肪酸决定的公布，反式脂肪酸又回到了人们的视野。本文对反式脂肪酸问题的始末，反式脂肪酸的性质、危害、来源，各国采取的控制措施、检测方法等多方面情况进行了介绍。

Much attention has been paid to the Trans fatty acids (FTA) in recent years, especially after the announcement by KFC that they will stop to use FTA in its products in the USA. In this paper, its characteristic, hazards, origin, determination methods, control strategies, etc., were introduced.