The full hydraulic free forging hammer refers to the free forging hammer whose strike and return stroke of the hammer head are hydraulically driven. The principle of the system is that the lower chamber of the hammer rod piston is usually connected with high-pressure oil, and the strike and return stroke are realized by controlling the oil pressure of the upper chamber of the piston. The full hydraulic free forging hammer has the advantages of sufficient energy, fast frequency, low failure rate, and can realize hanging hammer at any position. It is suitable for producing various types of free forgings.