Aiming at the problems that the field operation data in the power system can be repeatedly modified, part of the data is the supplementary record after the field operation is completed, and the lack of field operation monitoring, a blockchain-based reliable data storage certification power field operation risk management and control technology system is designed. The overall framework of the system and the data flow of the job site are given. The system is divided into application layer, platform layer, network layer and perception layer. In order to ensure that the operation data cannot be modified during the electric field operation, the data is stored through using blockchain technology. The principle of the enterprise blockchain is described, in order to meet the data through put requirements, the blockchain and the database system are combined. The artificial intelligence video analysis technology is used to establish the virtual fortification in the field operation video surveillance area to conduct target detection and behavior analysis of the video content, and an artificial intelligence training model for risk identification is established. Practical application of the visual display of the operation risk management and control system.shows that it is helpful for the field personnel in the power system to carry out the operation risk management and control.