“群体极化”作为一种社会现象,其积极作用主要体现在社会巨变或危机时期。在我们正常的社会生活中,我们并不期望有一些极端言论或行为的产生。网络的飞速发展,使网络舆论的作用日益凸显,而网络舆论的主体——网民的“群体极化”也就成为了我们关注的焦点。它很有可能扩散到现实生活中来,引起某些过激行为的发生,十分不利于社会的稳定和国家安宁。但是,目前无论是学者还是政府对它的关注都还不够,所以对它进行深入研究就显得十分必要而急迫。本文通过详细分析,指出了导致它产生的原因,并提出了相应对策及政策建议。 “Group polarization ” as a social phenomenon, its positive role is mainly reflected in the social change or crisis period. In our normal social life, we do not expect to have some extreme speech or behavior. The rapid development of the network, the role of the network of public opinion has become increasingly prominent, and the main network of public opinion - Internet users “group polarization ” has become our focus. It is very likely that it will spread into real life and cause some over-excited behavior, which is very detrimental to social stability and national peace. However, neither the scholars nor the government pay enough attention to it at present, so it is very necessary and urgent to study it in depth. Through detailed analysis, this article points out the reasons leading to it, and puts forward the corresponding countermeasures and policy recommendations.