With the continued development of green chemistry

how to apply and reflect the characteristics of green chemistry in analysis process

avoiding the secondary pollution of the analysis process and the possible harm to the analysts have received an extensive attention.Therefore

the development and use of solvents with green chemistry characteristics is one of the main work for analysts.Deep eutectic solvents(DESs) are another type of solvents with similar physical properties to ionic liquids(ILs).Compared with ILs

DESs have showed some advantages such as environmental friendliness

non-combustibility

biodegradablity

low cost and simple preparation

etc.DESs have been used as green solvents in the extraction and separation of target compounds in different samples.The preparation

properties and classification of DESs are summarized this review

and their applications in extraction and separation are also presented.