Based on the questionnaire survey for government officers,researchers and staffs in related enterprises engaged in climate change,their environmental safety awareness degree of carbon capture,utilization and storage (CCUS) technology and related projects was analyzed. The survey provided a solid basis to improve theTechnical Guideline on Environmental Risk Assessment for Carbon Dioxide Capture,Utilization and Storage (on Trial) . The results showed that most of the respondents knew about the CCUS technology,but their understandings about its environmental safety were limited. The future assessment in the guideline should focus on the calculation of carbon dioxide diffusion in the atmosphere,surface water,and groundwater by the most credible accidents,or according to the carbon dioxide transport distribution. The factors of the CCUS were ranked according to their degree of influence on environmental risk. The capture technology should focus on capture process and environmental risk substances. The transportation technology should focus on transport equipment material,transportation method and scale. The utilization and storage technology should take all the four factors into account.