In order to timely and accurately grasp the operation status and reliability of power grid operation equipment, this paper proposes an intelligent terminal system for power grid operation information based on the Internet of Things and blockchain technology. The system operation requirements and existing problems are explained. The application of Internet of Things technology and blockchain technology in the system is described, and an intelligent terminal system for power grid operation information based on Internet of Things and blockchain technology is proposed, and the system architecture, system function modules and mobile terminals are designed. Combined with the interactive scene of power grid operation, an example analysis is carried out.