The invention discloses an energy control system of a pure electric bus. The system comprises a vehicle controller and an independent battery control module. The vehicle controller comprises main control panel; the vehicle controller is connected with a communication module through a CAN; the communication module is connected with a micro-control unit; the micro-control unit is connected with a battery control module; the battery control module is connected with a battery management system; the battery management system is connected to the vehicle controller; the vehicle controller is connected with an electronic control unit; the electronic control unit is connected with a motor controller; and the vehicle controller is connected with a key starting system, a gear-shifting system, an acceleration system, a braking system, a thermal management system and a vehicle-mounted system. The battery management system is controlled through the micro-control unit and the battery control module for management and monitoring of a power supply battery portion of an energy control portion, thus all control modules do not interfere with one another, and optimal management and control of the energy control portion are achieved.