The invention provides a front axle roll-forging finished blank mold of a heavy-duty car, which relates to a front axle roll-forging finished blank mold of a car, in particular to a front axle roll-forging finished blank mold of a heavy-duty car. The mold comprises an upper half mold and a lower half mold which are respectively and symmetrically arranged on an upper roll and a lower roll of a roll-forging machine; the gap between the upper half mold and the lower half mold is 2 to 5mm; central angles of the upper half mold and the lower half mold are respectively 107.7-121.6 degrees; each half mold is a ring body, the inner radius and the outer radius and the width of which are respectively 260-300mm, 395-495mm and 250-265mm; the outer ring surfaces between the two ends of the upper half mold and the lower half mold are respectively provided with identical and symmetrical special grooves and through grooves consisting of transition grooves between the special grooves; and the radial sections of the special grooves form respective and corresponding hole types when the special grooves of all the same and corresponding sections on the upper half mold and the lower mold rotate along the upper roll and the lower roll of the roll-forging machine to the same axis position. The front axle roll-forging finished blank mold improves the accuracy of the roll-forging blanking, prolongs theservice life of the mold and reduces the energy consumption.