Abstract: To solve the problem of gravity potential energy waste during the clamp descending of the traditional valve-controlled forging manipulator,an energy-saving forging manipulator hydraulic circuit was constructed by combining the secondary hydraulic control system with the secondary adjustment technology. On the basis of the hydraulic circuit,a pressure closed loop control strategy with constant pressure differential was proposed for the recovery and reuse of the clamp's gravitational potential energy,and a simulation study was carried out based on a company's 100 kN forging manipulator. The results show that,this type of energy-saving forging manipulator hydraulic circuit can achieve potential energy recovery and energy reuse effects on the basis of satisfying the system control characteristic index. It can reduce the energy consumption of the hydraulic system and provide new ideas for the hydraulic system design of the forging manipulator in the future.