PROBLEM TO BE SOLVED: To provide a metal plastic processor capable of preventing the seizure of a molding pin to improve durability, reducing the maintenance and inspection frequency such as of molding pin replacement, and molding in safety at a high precision.SOLUTION: A metal plastic processor comprises: a first metal mold 1, equipped with a plurality of molding pins 3, 3 arranged radially to have a workpiece molding part 31 at the tip; and a second metal mold 2, equipped with a punch 5 provided to be capable of approaching and separating from the first metal mold 1 relatively in the axial direction to make a molding pin 3 advance radially inward Ra on slide contact with the base end of the molding pin 3, the molding pin 3 having a slide contact face 32 formed of an inclined plane at the base end, and the punch 5 having pressing face parts 52, 52 formed of an inclined plane on slide contact with slide contact faces 32, 32 of the plurality of molding pins 3, 3 by corresponding at a rate of one to one.SELECTE