The research of public opinion has been attached great importance recently whereas it is still weak. The main reason is that it is not recognized by journalism and communication, nor taken seriously by history. Nevertheless, the study of Chinese public opinion is not only helpful for people to learn from the past and then pursue a deeper understanding of public opinion environment in China, but also useful for undergoing the research of public opinion and journalism and communication in China. It is the integral part of journalism and communication and it should study the history of public opinion from the beginning in China instead of the history since the emergence of news media.