According to the characteristics of energy demand in the working process of fast forging hydraulic press, a new energy supply method, namely, the superimposed liquid supply energy-saving technology, was proposed. This technology used an accumulator for medium and low-pressure energy storage, and in a working cycle of the hydraulic press, a low-pressure liquid filling tank or a high-level oil tank was directly used to fill the liquid for the fast-down stroke. When the deformation pressure was small, the accumulator was used to provide medium and low-pressure forming pressure for the pressurizing stroke, and when the deformation pressure was larger, the supercharger was used to provide high-pressure forming pressure. These three processes were smoothly and coherently transitioned by the hydraulic pressure and control systems. Then, the relevant principles of superimposed liquid supply were described in detail, and the hydraulic working principle of 35 MN fast forging hydraulic press adopting superimposed liquid supply energy-saving technology was introduced. Furthermore, this technology was successfully applied in the actual production. The results show that under the premise of not reducing technical indicators, the installed power using this technology is lower than 1/3 of the current standard unit, and the power consumption of the standard unit without load can meet the normal operation of the unit with significant energy-saving effects and low cost.