From the social hot news, we can see that group influence is playing an important role. With the development of social media, the effect will be more and more enormous. In fact, the development of social media reverses the fade-out situation of real life and its group influence, resulting the "point" group impact of real life's transfer to "circle" effect onto the virtual network. Therefore, the idea of social management should also be changed from single "point" to the "circle" of small groups.