Forging manipulator is an important auxiliary equipment for modern forging industry. It has fast response speed, high automation, high precision, strong antiinterference ability, stable operation and good cushioning performance and other advantages.So it has been widely used in the equipment manufacturing industry. For 100T/250Tm hydraulic forging manipulator,the design, parameter selection and hydraulic components determination for the driving hydraulic system of the forging manipulator were introduced. It provides reference for similar design.