The present invention discloses a combined shaped automobile glass toughening forming device, its manufacture method and adopted assembly tool. Said invention is characterized by that it utilizes the idea of reducing dimension and idea of converting centralization of procedures into the dispersion of procedures to convert the space-type air grill working surface into dispersed type single air grill chain and air grill sheet which are easily machined, then utilizes a special tool to make the air grill chain and air grill sheet be assembled into the toughening air grill so as to obtain the invented low-cost simple combined shaped automobile glass toughening forming device.