The invention belongs to the field of mold technology, specifically a metal stamping die, including a bottom plate, a lower die, an upper die, a guide sleeve, a connecting strip, a mounting plate, a first mounting hole, a second mounting hole, a fixing sleeve, an electromagnet , guide ring, push block, movable iron rod, first spring, material guide pipe, second spring, connecting pipe, tee pipe, dust collection box, side plate, first rubber ring, first filter screen, handle, ring , discharge hole, guide rod, stamping cavity, metal block, third spring, pressure plate, punch, mounting frame, centrifugal impeller, motor, retaining ring, frame, second rubber ring, second filter screen and gas spring. The invention has a reasonable structure and is suitable for stamping on one side of the metal block to remove excess material. During stamping, before the punch rod contacts the metal block, the pressing plate and the setting of several third springs can be used to compress and limit the metal block in advance. Improve the stability of the metal block when stamping, avoid movement and warping, and improve the accuracy of stamping.