In the era of digital economy，data will become a new type of production factor. When using data as an asset，pricing and revenue allocation mechanisms are both important and widely concerned. Utilizing the characteristics of blockchain technology，such as difficult to tamper with，leaving traces throughout the entire process，easy to trace，open and transparent，we can build a new infrastructure for data hosting and will change the traditional model centered around data controllers. The distribution pattern of data rights and interests will be changed fundamentally，it will help to establish a fair pricing mechanism between data consumers and data processors. In the future，the data custodian institution can act as the trustee of all data subjects，take the role of big data transaction background infrastructure，and help to form a complete big data infrastructure system.