本文较全面地介绍了凝胶萃取分离技术的最新进展．重点介绍温敏、酸敏、电敏型三类凝胶的相变影响因素、溶胀皱缩机理、动力学研究及凝胶的应用等。 This article introduces the latest progress of gel extraction and separation technology. The influencing factors of phase change, swelling and shrinkage mechanism, kinetics and gel application of three types of gels, such as temperature sensitive, acid sensitive and electrosensitive gels, are mainly introduced.