CCUS is an important technical means to achieve the carbon neutrality goal. At present

China is in the implementation stage of the “dual carbon” goal

and there is still a lack of mature technical system in the economic boundary assessment

source-sink optimization and safety monitoring of geological sequestration of CO

2

. This paper summarizes the development process of China's CO

2

geological sequestration technique from three aspects

economic boundaries of sequestration technology

source-sink matching technology

and sequestration safety and monitori

ng

reviews the economic costs of CCUS technology in the capture

transportation

injection and burial period

and further summarizes the current technical and economic boundaries and influencing factors of each period. In addition

by summarizing the current development status of CCUS source-sink matching technology at home and abroad

the source-sink characteristics and distribution of China have been clarified

and further development directions for source sink matching optimization technology have been proposed. Finally

by summarizing the safety risk assessment and burial monitoring techniques for geological sequestration of CO

2

it is clear that economically efficient

effective

and quantitative monitoring methods are the focus of future research.