Abstract:Blockchain technology has the technical characteristics of decentralization, openness, transparency and full traceability, which provides a new technical direction and means for solving data sharing and intelligent application. However, due to the performance of blockchain and other factors, the convenience and utilization rate of data sharing application are affected. Therefore, an application scheme of data sharing system based on blockchain technology is proposed. By analyzing the technical architecture of smart grid power consumption information collection system, cloud side collaboration is adopted to ensure the business application speed and system performance; Combined with the consensus mechanism of POW and POS, the difficulty coefficient of the block is flexibly adjusted to improve the writing speed of the block. Through the equity value, credit value and time reward, the user"s bookkeeping right is determined, and the initiative of the master node to create the block is encouraged; Through the design of programmable smart contract, users can easily access data types; Through simulation analysis, the system can meet the application requirements of smart grid information system. At the same time, it greatly guarantees the security of the whole life cycle of data information generation, transmission, collection, storage and sharing applications..