Application of eutectic solvent in detection of pesticide, pesticide metabolite or antibiotic

The invention provides an application of a deep-eutectic solvent in detection of pesticides, pesticide metabolites or antibiotics, a hydrogen bond receptor of the deep-eutectic solvent is thymol and/or methyl trioctyl ammonium chloride, and a hydrogen bond donor is PEG-200 and/or n-decanoic acid. The eutectic solvent provided by the invention has the advantages of being green, environment-friendly, low in cost and the like, is good in hydrophobicity and easy to separate from a water phase, can be used for simultaneously extracting dozens of target compounds including pesticides, metabolites and antibiotics, has greater advantages compared with the existing eutectic solvent which is only extracted for one or more target compounds, and is suitable for industrial production. The method has efficient separation capacity, high sensitivity and high selectivity in the aspect of pesticide multi-residue detection, and qualitative and quantitative analysis can be more accurately carried out. 本发明提供了一种低共熔溶剂在农药、农药代谢物或抗生素检