In recent years，with the rapid development of blockchain technology，many enterprises have already or in the process of migrate business data to blockchain，Meanwhile a large number of enterprise data will face the problem of blockchain data security management. This paper mainly discusses the data security governance of the alliance chain and the private chain. The alliance organization and enterprise organization are the basic units of data security governance for the theoretical and technical framework of blockchain data security governance is analyzed，and provide standards for enterprise data security for maximize the business value of blockchain data for enterprise. At the end of the article，we have prospects for the future of blockchain data security governance.