Tang Yunfeng and sun Pingping wrote in the 2rd issue of Academics for 2021 that with wechat becoming the most active social platform, wechat public opinion governance has become the key to the prevention and control of public opinion events. Through the analysis of the hierarchical relationship among the subjects in the public field of wechat, it is found that due to the hierarchical strong connection, self-organization and content sharing of wechat public opinion communication, the subject of public opinion in the public field of wechat relies too much on information, the closeness of information and the mutual coupling resonance, which will complicate the transmission path of wechat public opinion and produce the consequences of fragmentation. Therefore, the government needs to make corresponding improvements from the aspects of regulatory accountability, information content specification and public opinion feedback mechanism, user data management, information monitoring and public opinion early warning technology, and the cultivation of public responsibility, media literacy and rational values of relevant subjects, so as to build a diversified wechat public opinion governance system on the basis of rationality.