Abstract: In order to ensure the safe and reliable operation of the new power system dominated by new energy and improve the early warning capability of the power equipment defects, it is urgent to carry out the digital and intelligent transformation of the health management and the operation and maintenance mode of the power equipment. Therefore, a new architecture of the health management and the intelligent operation and maintenance of the power equipment is constructed under the background of a new power system. The content and technology involved in it are described in detail, including the edge cloud collaboration technology, the digital twin model construction technology, the knowledge map construction technology and its typical applications. Then, the key methods to realize the state assessment, the fault early warning and the intelligent operation and maintenance of the electric power equipment are clarified based on the existing research work. The problems that need to be solved are expounded and explored accordingly. Finally, the development trend of the health management and the intelligent operation and maintenance of the power equipment in the future is expected.