With the continuous development and perfect of the smart grid,the design of metering automatic system implementation plan adapted to the smart grid has been turn on our work schedule.In this paper,borrowing ideas from home and abroad and combining the current situation of domestic metering automatic system,the author proposes a system structure & design principle which is adapted to future Smart Grid.Taking Shenzhen Power Supply Bureau as an example,we propose some thoughts based on existing traditional metering automatic system to build the next generation system.