Abstract:

With the generation of Web 2.0 technology, online social network platforms have developed a lot. The findings of online social network structure based on complex network theory in recent years are reviewed first. From the aspect of underlying mechanism network topology, the formation differences of different online social networks are pointed out. Then taking the social network relationships of one  laboratory of Beijing University of Posts and Telecommunications as an example, the influence of the structure of scientific communities and compact communication networks on information dissemination is confirmed, which helps understand the dissemination characteristics of information in network and the mechanism of network structure and social media is further analyzed.

Key words: complex network, network topology, online social network;