To provide a press-contact mandrel for hot extrusion with which the manufacturing cost of a mandrel is reduced by facilitating the change of only a mandrel which is only a consumable part.

In the mandrel for hot extrusion, the mandrel is divided into a parallel part, a step and a screw part and the parallel part is made changeable by the press-contacting in this mandrel for hot extrusion. The press-contact process means that the parallel part and the step of the mandrel are fitted to each other.