The invention relates to the technical field of fire alarm equipment, in particular to a fire alarm device for a communication base station. The fire alarm device comprises a power device, an MCU control module, a detection unit, an alarm unit, an open circuit protection unit, an image acquisition unit, a wireless communication unit, a warning light unit and a fire extinguishing unit, wherein thepower device is in energization connection with the MCU control module, and the MCU control module is in energization connection with the detection unit, the alarm unit, the open circuit protection unit, the image acquisition unit, the wireless communication unit, the warning light unit and the fire extinguishing unit. The fire alarm device is simple in structure and is easy to install and disassemble; and remote monitoring equipment is arranged, a fire condition in the base station can be monitored in real time, the corresponding processing is targetedly made, the fire alarm device has a remote warning function, a fire fighter is convenient to understand fire information within first time, meanwhile, the fire alarm device has functions of open circuit protection and fire extinguishing, the safety of the equipment is greatly protected, and the economic loss caused by fire of the equipment is reduced.