Direct Air Capture (DAC) technology can achieve permanent sequestration or resource utilization of CO₂ by capturing low-concentration CO₂ from the atmosphere, providing a "net-negative emissions" pathway for the cement industry. Its core innovation lies in the development of adsorbents. This article systematically summarizes recent research progress in adsorbents and compares the characteristics of liquid absorbents versus solid adsorbents by compiling experimental data, analyzing different technical routes, and examining actual application cases. Regarding cement industry integration, it proposes concepts such as using cement kiln waste heat to drive DAC regeneration, mineralizing captured CO₂ with solid waste to produce cementitious materials as partial clinker substitutes, and establishing carbon-closed loops (e.g., a "green hydrogen-DAC-mineralization" system). These insights provide a theoretical foundation for advancing the deep integration of DAC technology with the cement industry.