As the global CO₂ emission continues to surge daily,exerting significant pressure on the environment.A hydrophilic deep eutectic solvent (DES),capable of highly efficient CO₂ absorption,is synthesized via one-step method to address this challenge.Characterization techniques such as liquid nuclear magnetic resonance (NMR) and infrared spectroscopy are utilized to explore the mechanism of the prepared DES in absorbing CO₂.Concurrently,the influences of the related physicochemical parameters and various factors on the absorption performance of the prepared DES for CO₂ are determined and discussed.The findings demonstrate that the maximum CO₂ absorption capacity obtained is 0.339 7 g CO₂/g DES under a controlled absorption time of 60 minutes,a temperature of 30℃ a gas flow rate of 20 L·h^-1,and a molar ratio of 1∶6.