Taking the basic conceptual consensus and institutional norms of public opinion guidance as the “benchmark”，the public opinion guidance ability of major emergencies in 2021 is evaluated from the three dimensions of information release，media communication and agenda setting. It is found that there are three prominent characteristics，namely，more standardization and less effectiveness；High expansion communication capacity and lack of early warning service capacity；Stronger initiative，weaker leadership. Put forward main policy suggestions，such as improving the pertinence of information release；strengthening public opinion risk assessment；avoiding response failure and enhancing media disaster early warning reporting；enhancing the ability to set issues and the dissemination of values.