The present invention discloses an energy adjusting system. The energy adjusting system comprises a power shaft, an impeller A, an impeller B, a speed changer and a hydraulic pump, wherein the impeller A and the impeller B are in series connection arrangement, the power shaft and the impeller A are in transmission arrangement, the power shaft and the speed changer are in transmission arrangement, the impeller B and the hydraulic pump are in transmission arrangement through a clutch, and inertia bodies are arranged on the impeller B, on a transmission component between the impeller B and the hydraulic pump and/or on a transmission component of the hydraulic pump. The energy adjusting system provided by the invention is advantageous by being simple in structure, high in efficiency, good in load response, excellent in environmental protection performance, and capable of scientifically distributing the torque of the power shaft of a prime motor and providing flexibility for spatial arrangement.