Chain block is a kind of new information mechanism, in the past, office automation system (OA) help us to set up business process automation, the mechanism of the Internet (NET) help us to set up the mechanism of communication automation and artificial intelligence (AI) help us to set up the mechanism of cognitive automation, block chain (BT), helped us to build the trust mechanism of automation, it is a great invention, humans may therefore entered the era of credible Internet, chain blocks can be automated build a group, an industry, an interest group of the trust relationship, realize the automation of community trading patterns and business model innovation, community trust driven mode will be block chain brings the change of social relations,