Library safety fireproof door system

The utility model discloses a library safety fireproof door system which comprises a power supply and an alarm mechanism, and the alarm mechanism is connected with the power supply through a main wire. The alarm mechanism comprises an alarm switch, an alarm lamp and a buzzer which are connected in series through branch wires, and the alarm lamp and the buzzer are arranged at the main station; a key groove is formed in the wall on the indoor side of the fireproof door in a sunken mode, and a key hook used for hooking a fireproof door key is arranged at the key groove. A glass cover is arrangedat a notch of the key groove, a switch groove is concavely formed in the groove bottom of the key groove, and the alarm switch is arranged at the switch groove. When a fire occurs in a library, time for workers to go back and forth to a main desk and wait for finding corresponding fireproof door keys at the main desk is saved, and therefore compared with the prior art, the speed from fire occurrence to fire door opening f