Abstract: The development and characteristics of ionic liquids （ILs） in recent decades are reviewed. The mechanism for remarkable solubility of CO2 in ionic liquids and the monte carlo simulations for predicting the atomic force fields of absorptions in ILs are also summarized. The significant advantages of fixation and utilization of CO2 with ILs as absorbent，catalyst or promoter used in organic reaction，catalyzed reaction，electrochemical reaction，supported ionic liquid membranes over the conventional absorbents and the catalytic systems without ILs are discussed. Furthermore，the proposal for solving existing problems and the prospect of its application are presented.

摘要： 介绍了近几十年来离子液体的发展历程及其特点。阐述了CO2在离子液体中高溶度机制，对CO2 在离子液体中吸收的原子力场进行了计算机模拟预测。评述分析了离子液体作为吸收剂或助剂或催化剂，在有机反应、催化反应、电化学反应、支撑液膜中固定化利用CO2时，与传统吸收剂和没有离子液体的催化体系相比具有诸多优点，并对尚存在的问题提出了建议，并对前景做了展望。