As an abundant, renewable, and inexpensive carbon feedstock, CO₂ can be converted into valuable products, creating substantial environmental and economic benefits. Polyurethanes (PUs) and polyureas (PUAs) with versatile properties have been commonly used in everyday life applications and possess vast market demand. CO₂-sourced PUs and PUAs can alleviate the involvement of petroleum, and they have attracted ever-increasing attention from industry and academia because of their high economic value and fancy properties in many high-value-added material fields. This has led to their recognition as a promising strategy from the viewpoint of green and sustainable chemistry. In this review, the state-of-the-art research progress on CO₂-based PUs and PUAs, with particular emphasis on their synthetic principles, modifications, applications, and degradability are summarized. Additionally, future considerations, prospects, and possible challenges in converting CO₂ to nitrogenous polymers are also discussed. This review is intended to serve as a tutorial guide for the future development of novel CO₂-sourced PUs and PUAs with unique properties and functions.

作为一种丰富、可再生且廉价的碳原料，CO ₂可以转化为有价值的产品，创造巨大的环境和经济效益。聚氨酯（PU）和聚脲（PUA）具有多种性能，已广泛应用于日常生活中，拥有巨大的市场需求。CO ₂来源的PU和PUA可以减轻石油的参与，并且由于其高经济价值和在许多高附加值材料领域的优异性能而越来越受到工业界和学术界的关注。从绿色和可持续化学的角度来看，这使他们被认为是一种有前途的策略。_{本文综述了CO 2}基PU和PUA的最新研究进展，特别重点介绍了它们的合成原理、修饰、应用和降解性。此外，还讨论了将CO ₂转化为含氮聚合物的未来考虑因素、前景和可能的挑战。本综述旨在为未来开发具有独特性能和功能的新型CO ₂来源的PU 和PUA 提供指导。