The utility model belongs to the field of the manufacture of oil-drilling rig equipment, and mainly relates to an energy-saving generator device used for background transmission innovation of the drilling rig. The device comprises a No.1 aggregate unit and an energy-saving generator, and is characterized in that the No.1 aggregate unit and the energy-saving generator are fixed on the same base, and are taken as an integral transportation unit. The utility model has the following advantages: the energy-saving generator is integrally connected with the No.1 aggregate unit, and meanwhile can be transported together with the No.1 aggregate unit, so that the workload of transportation and installation is reduced, and the service lives of the No.1 aggregate unit and the energy-saving generator are prolonged; and by adopting an integral structure, the utility model can ensure small vibration of the energy-saving generator during operation, so that the service life of the energy-saving generator can be prolonged.