The utility model discloses a hydraulic pressure high -speed forging machine, it changes hydro -cylinder and the fixed displacement sensor who sets up that the valve is connected with hydraulic pressure to include, through the rotatory transform and the break -make that realizes the liquid stream direction of case, reach piston rod in the hydro -cylinder that the spool rotation round realized linking to each other with the valve body and accomplish and once push down and go upward, through the cooperation of the commentaries on classics valve in this high -speed forging machine displacement sensor, can realize the precision of automatic control forging size. The utility model has the advantages of being simple in structure and convenient in operation, degree of automation is high, and thesetting through proximity switch can make the case despin in order to accomplish required operation in the relevant position, the utility model discloses a change valve and the hydro -cylinder back that links to each other, can substitute the pneumatic hammer, realize the short stroke and forge soon, vibrate little, the noise hangs down, the sexual valence relative altitude.