Abstract: Taking Occupy Wall Street as an example, the impact of social/network events was investigated on the complex topology's connection of Internet. The reasons why topology's features could suddenly change were analyzed while the events were happening. The relationships between each feature and the event's evolution were respectively discussed through correlation analysis to find out which feature correlated most closely with the events' evolution. The network topology was divided into three levels including low-core, medium-core and high-core, and the connection between the levels was analyzed in terms of the core. The result shows that the events can change routing paths by searching, thus makeing the average path length change sharply. The change in the number of edges in each core was analyzed, which showed that the change of the average path length was caused by "longer" edges.