Abstract: To alleviate the increasingly severe global warming problem and achieve carbon neutralitygoals, the carbon capture, utilization, and storage (CCUS) technology has attracted widespread atten⁃tion as an important breakthrough direction. High-performance adsorption separation technology is thekey to the implementation of CCUS technology. For the currently largest and most difficult-to-handlelow-concentration CO2 emission, such as direct capture of CO2 from air, considering factors such ascapture energy consumption and cost, pressure swing adsorption has obvious advantages over chemicalabsorption, membrane separation, or other technologies. The selection of suitable adsorption materialsis crucial. This article reviews several main types of CO2 solid porous adsorbents at present stage, inclu⁃ding carbon materials, metal-organic frameworks (MOFs), molecular sieves, amine-modified solidporous materials, and polyionic liquids, expounds their related research progress and existing problemsin CO2 capture process, and briefly introduces the subsequent industrial applications. The issues forcurrent low concentration CO2 capture technologies to be addressed are associated with the adsorbent re⁃generation and diffusion problems and the prospects for the conversion and reuse process ofcaptured CO2.