The utility model relates to a hand grip mechanism for forging, particularly provides a flexible mechanical hand grip which is used for automatically clamping high temperature forging parts with different sizes in the high temperature environment for a forging production enterprise and aims to provide the mechanical hand grip applied onto forging equipment for automatically loading and unloading. The mechanical hand grip for forging is provided with a forging mechanical hand fixing seat; a hand grip assembly and a driving assembly are arranged on the forging mechanical hand fixing seat; the hand grip assembly comprises a fixed mechanical clamping jaw fixed at the tail end of the forging mechanical hand fixing seat, a movable mechanical clamping jaw and an optical shaft push rod; the driving assembly comprises a cylinder fixed at the upper end of the forging mechanical hand fixing seat and a cylinder seat; the cylinder seat is provided with a heat dissipation optical shaft; an extension bar of the cylinder is connected with the optical shaft push rod by a heat dissipation clearance connector; and a copper sleeve guide seat which takes an effect of guiding the optical shaft push rod is arranged on the cylinder seat.