The invention relates to a two-jaw die. The two-jaw die comprises a two-jaw die bottom plate. The two-jaw die bottom plate is a horizontally-put rectangular plate. A longitudinally-arranged two-jaw die right supporting strip is arranged on the right section of the front face of the two-jaw die bottom plate, a longitudinally-arranged two-jaw die left supporting strip is arranged on the left sectionof the front face of the two-jaw die bottom plate, and each of the rear section and the front section of the top face of the two-jaw die bottom plate is connected with two two-jaw die outer limitingplates leftwards. A two-jaw mechanism manufactured from the two-jaw die is used for an olecranon clip for engineering machinery,the olecranon clip can be conveniently assembled on and cooperate with excavators of various types, the manufacturing process of the olecranon clip depends on an olecranon clip die, the olecranon clip die is adopted for manufacturing, and a manufacturing method has the beneficial effects of being high in adaptability, good in universality, easy to operate and high in one-time forming rate.