With the rapid development of energy interconnection, the characteristics of large-scale, large regional interconnection, multiple energy sources, wide distribution, large scope and the interconnection characteristics of the energy interconnection put forward new ideas for the full life cycle evaluation of existing metering equipment, making the energy interconnection put forward new requirements on the reliability of metering equipment, the business model of quality control and the technology of life cycle evaluation, etc. This paper introduces the quality management and control business mode and life cycle evaluation technology of metering equipment based on "Internet+" in the complex application environment of the energy interconnection, which solves the problem of the current quality management and control and evaluation technology of measuring equipment mainly reflected in the acceptance, distribution, operation, and scrap of power companies, but the lack of quality control and evaluation methods at the front end of the life cycle of research and development, material procurement, and manufacturing at the production company side, so as to create a closed-loop quality management control system for the production and use of smart meters, the quality evaluation runs throughout the whole life cycle to achieve the leading and driving of the industry development.