In the development of an automatic stamping progressive die for a certain type of curved chain plate of pin-joint chain, it is difficult to automate the processing of curved chain plate of pin-joint chain because the punching process involves the problem that the scrap is difficult to remove and the workpiece is inconvenient to take out. Therefore, for this problem, the design idea of automatic stamping progressive die for curved chain plate was continued, and a double-slanting wedge horizontal hedging punching die design scheme was proposed to replace the original hanging vertical punching die, and the horizontal hedging punching process scheme was simulated and verified by software DEFORM-3D.Furthermore, on this basis, the process parameters such as punching gap, die or punch edge dimensions and punching force were calculated, and the structure design of key components such as slanting wedge, punching device, die, pressing device and discharging device was carried out, and the 3D design of die was completed by software SOLIDWORKS. Finally, the prototype die was developed and the stamping test was carried out for verification. The results show that the developed double-slanting wedge horizontal hedging punching die can be well applied to the automatic stamping progressive die for curved chain plate. After sampling inspection, all the workpieces after punching are qualified, which also effectively solves the problems that it′s difficult to remove the punching scrap and inconvenient to take out the workpieces. Thus, the automatic production of curved chain plate is realized, and the development time of die and die trial period are effectively shortened.