Firearm secondary bolt opening safety mechanism

The utility model relates to a firearm secondary bolt opening safety mechanism which comprises a safety lever arranged on the outer side of a free end of a firing resisting iron pole of a firing device, a rotating pin and a return torsion spring are arranged in the middle of the safety lever, the middle of the safety lever protrudes upwards smoothly, a guide rope seat of a firearm is positioned on a cradle and slides above the safety lever, the safety lever rotates around the rotating pin and returns through the return torsion spring, the highest point of the middle of the safety lever is higher than the lowest point of the rope guide seat, the tail end of the safety lever tilts upwards to be exactly positioned right ahead the free end of the firing resisting iron pole and fitted with the firing resisting iron pole, and the tail end fails down after the safety lever returns. The firearm secondary bolt opening safety mechanism is safe and reliable to use, reasonable in integral structural arrangement, attractive in appearance, few in parts, good in manufacturability and convenient to maintain.