In recent years,deep eutectic solvents increasingly become a hot topic in the field of green chemistry due to their characteristics of low-cost,easy to get raw materials,low vapor pressure and its more environmentally friendly synthesis process. Especially deep eutectic solvents can be used as extraction agent in the chemical separation process which caused widespread concern. This paper describes the composition and properties of deep eutectic solvents,their applications and some research progress in the separation process. Finally,its future research directions and problems were discussed.%近年来，低共熔溶剂由于具有廉价、原材料易得、蒸汽压低且更加环境友好的合成过程等特点，越来越成为绿色化学领域的研究热点，特别是低共熔溶剂作为萃取剂在化工分离过程中的应用引起广泛关注。本文主要介绍了低共熔溶剂的组成、性质以及在分离过程中的一些应用和研究进展，最后对其未来的研究方向和存在的问题进行了讨论。
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