The invention discloses an electro-hydraulic servo garbage compression box power unit. The electro-hydraulic servo garbage compression box power unit comprises an oil tank, an oil pump, a push plate oil cylinder and a tipping bucket oil cylinder. The oil tank is connected with the oil pump. The oil pump adopts an electro-hydraulic servo to supply oil to a system. One way of the output end of the oil pump is connected with the push plate oil cylinder through a two-position four-way reversing valve and a two-position four-way guide valve. The other way of the output end of the oil pump is connected with the tipping bucket oil cylinder through a three-position four-way valve. According to the electro-hydraulic servo garbage compression box power unit, the degree of integration and the degreeof automation are remarkably improved, and the working efficiency can be greatly improved through the overload capacity of an electro-hydraulic servo power unit; the shaking phenomenon in the processof garbage loading and unloading can be relieved through servo proportion accurate curve control; through servo proportion torque control, no overflow in the whole process can be achieved, oil supplyaccording to demands is achieved, and better energy saving and environmental protection can be truly realized; the electro-hydraulic servo is adopted to replace a traditional motor, the efficiency ofgarbage compressing is increased by 30%, and the compression time is shortened; and the energy saving rate of reducing energy consumption is increased by 60%, heat generation of the system is reduced,and the service life of a hydraulic element is prolonged.