In recent years, in order to further reduce the carbon capture energy consumption caused by CO2 generation in coal-fired power plants, phase change absorbers based on traditional organic amine chemical absorbers have become a research hotspot in CCUS (CO2 capture, utilization, and storage) technology. Compared to traditional organic amine phase change absorbers, new phase change absorbers have better performance. Starting from the classification, process flow, and research progress of traditional phase change absorbers, this article elaborates on the limitations of their development due to issues such as viscosity, proportion of rich phases, and cost. In response to the above issues, combined with solvent composition and phase change mechanism, this paper focuses on the review of new phase change absorbers represented by physical solvent type phase change absorbers, which can be mainly classified into three categories: alcohol amine mixed type, sulfone amine mixed type, and ether amine mixed type phase change absorbers; At the same time, introduce and analyze the research status of various absorbents from the aspects of phase separation and performance improvement, compare the advantages and disadvantages of various solvents, and conduct in-depth analysis; Finally, based on the current research status and industrial application needs, suggestions are given for the research direction of physical solvent based phase change absorbers.