To provide a fire alarm system by which a manager rapidly confirms whether issued alarm is fire alarm or non-fire alarm without going to the installing place of a fire sensor which issues alarm when a fire receiver outputs fire alarm.

The system is constituted in such a way that an automatic reporting device 2 connected to a communication network N is connected to the fire receiver E, the fire receiver 1 transmits at least the address information of the fire sensor S to the automatic reporting device 2 when the fire sensor S issues alarm, the automatic reporting device 2 retrieves previously registered communication terminal equipment 3 in accordance with address information when the address information of the fire sensor S is received from the fire receiver 1 and retrieved communication terminal equipment 3 is called with the communication network N.