Forklifts, as one of the most commonly used transportation tools in current engineering construction, have extremely high research value. With the increasing energy-saving requirements of the forklift industry, energy-saving improvement of the lifting system in the hydraulic lifting system of forklifts has become a research hotspot. To optimize the energy saving of the forklift hydraulic lifting system, this research proposes to use the secondary regulation technology to optimize it. The gravity potential energy generated in the lifting of the load is recovered through the secondary components, and stored in the energy accumulator to provide energy for the operation of the system, to reduce the energy consumption of the engine. The experimental results show that compared to traditional lifting systems, the proposed secondary regulation lifting system saves 29 kJ of energy consumption and can achieve an efficiency of 87.8%. In addition, the load weight, lifting speed, and energy storage capacity all have varying degrees of influence on the energy consumption of the improved secondary regulation system. When the load weight is 5 kg and 15 kg, the energy consumption difference between the two is 75 kJ, and the displacement difference is 0 m. When the lifting speed is 0.1 m/s and 0.3 m/s, the displacement distance difference between the two is 1.5 m, and the energy consumption difference is 123 kJ. When the energy storage capacity is 5 L and 11 L, the displacement distance difference is 0.1 m, and the energy consumption difference is 89 kJ. Therefore, the improved secondary regulation and lifting system proposed in the study has high energy-saving performance.