The invention belongs to the field of cloud storage resource management and specifically provides an optimal distribution method for a cloud resource for energy-saving control. A gain result of the optimal gain Nash equilibrium of a cloud resource supplier and a demander is taken as a parameter and is fed back to an energy-saving control system through a gain feedback function; the result is returned to a cloud service combination required by a gain game through a cloud service combination feedback function; the optimal cloud service combination meeting Nash equilibrium can be found by taking a QoS parameter guaranteed by SLAs as a requirement; when the optimal gain balance is achieved, the resource is distributed by a resource distributor, so that the energy-saving operation is realized. The optimal gain balance of the cloud resource supplier and the demander is achieved, the use ratio of the cloud resource is further increased, the optimal energy conservation and emission reduction can be realized and the energy consumption can be reduced.