The era of "big data" has dawned, which is known as a disruptive technology change in succession to the cloud computing and EPC system network. It will have huge influence on society, business and human. In this background, this paper analyzed the influences which will have on the commercial banks with the arrival of "big data" era. Some suggestions are put forward, such as combining financial services and social networking, strengthening cooperation among big data finance and cultivating the core abilities