Climate warming has become a global environmental problem, more and more governments and people's attention. At present, most scientists generally agree that carbon dioxide released by human activities is the most important greenhouse gas causing global warming. Reducing carbon dioxide emissions from coal burning is an important measure to reduce global warming. This paper analyzes the significance of CCUS and CO2 transport, explores the CO2 transport mode, studies and discusses the methodological issues, and summarizes the types of CO2 emission reduction technologies.