A metal pressure casting die swing hook dual-division swage die mechanism comprises a die fixed clamping plate, a fixed die plate, a moving die plate, a moving die base plate, a moving clamping plate, a push plate arranged inside the die and a venting pin, a swing hook (6) is movably connected onto the outer side face of the fixed die plate(4) through screws, a pulling hook (7) is fastened onto the outer side face of the fixed clamping plate (5), a limited block (2) is fastened onto the outer side face of the moving die plate (11), the swing hook (6) and the limited block (2) are in buckled fitting, and a roller on the swing hook (6) and a roller on the pulling hook (7) are in sliding fitting. The action of the swing hook and the action of the pulling hook are adopted in the die, so that when the die is opened, a sprue of a gating system is automatically cut off, the problem that a sprue cannot be cut off automatically in a metal pressure casting die is solved, meanwhile, the design is optimized, it is achieved that the structure is simple, the sprue is cut off by utilizing the time of die opening, clotted materials fall out of the die as a result of the self weight, the motion is firm and reliable, and the demoulding is conducted smoothly.