Opinion refers to the network users around certain social groups, public events, using the Internet technology, expressed by electronic text, converging in cyberspace, with a certain continuity, a clear response structure and attitudes toward the views and aspirations to form the some kind of public opinion. As an Internet technology to support the new expression of public opinion, the network of public opinion in the process of building a harmonious society, with many of the traditional expressions of public opinion do not have the advantages and characteristics. However, the network of public opinion naturally has two sides, on the one hand it promotes democracy, it also may be negative social impact of the "booster." This paper describes the concept, case studies and theoretical demonstration of the method, first introduced the public opinion generated by the network research background, significance and research purposes, to clarify the functions of the network of public opinion, public opinion analysis of China’s lack of network problems, to "drag racing case in Hangzhou" example of China’s Internet capabilities and limitations of public opinion shows targeted to reveal the limitations of most of its existence-the network "tyranny of the majority," the negative consequences. Article concludes with the shortcomings of the network of public opinion, suggested that the Government take to enhance public awareness of the network and establish a network of authoritative sources of information, increasing information input and guidance measures to optimize the network environment. |