The invention relates to an energy-saving hydraulic type oil pumping device. The oil pumping device comprises two hydraulic cylinders, wherein the two hydraulic cylinders are both vertically arranged, end parts of rodless cavities of the two hydraulic cylinders are connected, a piston rod of the upper hydraulic cylinder is connected with the upper end of a bracket, the lower end part of the piston rod of the lower hydraulic cylinder is connected with an oil pumping rod in a shaft below the bracket, rod cavities of the two hydraulic cylinders are connected with an oil tank in a hydraulic station through a switching valve group and an oil pump in the hydraulic station, and the piston rod of the lower hydraulic cylinder triggers an upper limit switch and a lower limit switch when operating to the topmost part and the bottommost part respectively. According to the energy-saving hydraulic type oil pumping device, parts such as a horsehead, a walking beam, a connecting rod, a balancing weight and the like in the prior art are eliminated, so that the structure of the oil pumping device is greatly simplified, energy waste caused when a motor drives a balance weight in the prior art is avoided, that is, the oil pumping device and a driving part are both improved, the overall size is reduced, the energy utilization is more reasonable, and the work efficiency is higher.