The new highaccuracy, high realtime, network management system for electric vehicles energy measurement takes a new model that charging pile calculates energy and keeps track of charging message, updates data to the backend server and downloads trading data to charging pile after settle accounts by the backend server. The model is beneficial to supervision management and energy detecting of the charging equipment for the relevant departments. Charging pile is designed with ARM microprocessor. Charging pile exchanges data to the backend server with micropower shortrange wireless communication technology combined with GPRS longrange wireless communication technology.