Abstract: China is a typical country where social network is such an important role that its function should hot be ignored. Recent years, a few companies in China vaguely have some similar characteristics in the social responsibility performance. In this paper the similar behavior of corporate social responsibility (CSR) performance in the social network is explored by using the data from China's listed companies. The data about the management and finance is collected from CSMAR database and RESSET database, and the CSR performance's score is from RKS Rating. Degree Centrality,Betweenness Centrality and Closeness Centrality are used to reflect the social network centrality, and the size of the company and the Sustainable Growth Rate is made to be the Control Variables. It is found that, companies with social network ties will have the similar behavior of CSR performance. If the company is in a core position, or it can spread information much easier, or it has stronger controlling force than others in the social network, other companies which are associated with it will have more similarities of CSR performance. Compared to the core position of a company in the social network, it has a far more far-reaching impact on the communication ability and the control ability of the information. Therefore, using the core company is suggested to drive other companies which have ties with it. This conclusion will help us to improve the corporate social responsibility performance in China.

Key words: social network, corporate social responsibility, similar behavior