Bulletproof door with bounce detection alarm device

The utility model relates to a bulletproof door with a bounce detection alarm device, which comprises a resistance detector, and a bulletproof layer is formed by sequentially attaching a stainless steel surface layer, an insulating film, a galvanized steel sheet, a bulletproof film and a bulletproof steel sheet; before being hit by a gun, the galvanized steel sheet in the door is insulated from the stainless steel surface layer and the bulletproof steel sheet. When the bulletproof door is hit by a gun, the bulletproof door is opened; bullets penetrate through the stainless steel surface layeron the surface of the bulletproof layer and the insulating film; instantaneous touch galvanized steel sheet, the length of the bullet is larger than the distance between the stainless steel surface layer and the galvanized steel sheet, so that the resistance value between the stainless steel surface layer and the galvanized steel sheet which are insulated from each other is changed, the resistancedetector detects the resi