CO2 capture, utilization and sequestration technology is an effective solution to achieve carbon neutralization, and the development of high-tech and economical enhanced absorption is the prerequisite for carbon capture. Due to the limitation of monoamine solution, the multi-component mixed solvents based on the coupling strategy can enhance the absorption of CO2, especially the CO2 emitted during the energy utilization process, which can achieve the coordination of functional groups, enhance the absorption performance and reduce the energy consumption of regeneration. In this paper, the performance characteristics and process mechanism of enhanced absorption of CO2 by the latest multicomponent complex based on MEA, anhydrous, ionic liquids and phase change absorbents are discussed. The quantitative effects of important operating parameters such as CO2 partial pressure, temperature, solution ratio and gas-liquid flow rate on the absorption properties are analyzed, and its technical and economic properties are analyzed and evaluated. Finally, the problems to be solved in the development of CO2 absorption by multi-component mixed solvents based on MEA are summarized and the future development direction is prospected, in order to provide reference for the development of new composite MEA solutions to absorb CO2.