The invention relates to an electric revolution system, a control method of the electric revolution system and a transit mixer truck provided with the electric revolution system. The electric revolution system comprises a BSG engine unit, a power source, a controller, a mixing barrel and a mixing barrel driving assembly, the BSG engine unit comprises an engine, a belt and a BSG motor, and the engine and the BSG motor are in transmission connection through the belt; the controller is electrically connected with the power source and the BSG motor; the mixing barrel is used for mixing concrete; the mixing barrel driving assembly is connected with the mixing barrel and is used for driving the mixing barrel to run, and the mixing barrel driving assembly is electrically connected with the BSG motor and is electrically connected with the power source through the controller.