The utility model relates to a walking beam-typed hydraulic energy-saving pumping unit. The utility model has the technical proposal that based on a general beam-pumping unit, a set of horseheads is additionally arranged on the tail of the beam, the lower part of which is suspended and provided with a cement prefabricated balance barrel that is columniform, hollow, and tank-shaped; the cylinder of the balance barrel is provided with a quick coupler which is communicated with a liner thereof by a pipeline in order to additionally arrange liquid to the liner or take out the liquid from the liner through a hose, thereby achieving the purpose of adjusting the balance without closing the pumping unit. an original gear-box and a drive motor are disassembled, a set of hydraulic stations is arranged at the position of the original gear-box and the drive motor, a pair of hydraulic cylinders is additionally arranged on both sides of a bracket thereof and the beam, and is connected with the hydraulic stations through the pipeline, and the hydraulic cylinders drive the beam and the horseheads to move to work up and down. The utility model has the advantages that the power consumption is greatly reduced, and the energy sources are saved, the structure is compact and simple, and the cost is lowered, the safety is increased by arranging no rotation components; the balance can be accurately adjusted without closing the pumping unit, the brake is simple, and the start-up is easy without being turned over, the pump stroke adjustment is easy, and the range is wide.