The invention discloses a bay section controller used for an underground comprehensive pipe gallery. The bay section controller comprises a control chip, an internal memory, an upstream interface and a plurality of downstream interfaces. The bay section controller is connected with subsystems including an alarm system, a ventilation system, a drainage system, a sign system, a fire fighting system, a video monitoring system, an illuminating system and the like in a pipe gallery cabin and monitoring equipment of a municipal public pipeline, therefore, the systems of temperature, humidity, firefighting, monitoring and the like in the pipe gallery are monitored and remotely controlled through the pipe gallery controller; in addition, a housing construction of the bay section controller achieves the effects of preventing dust, water and explosion.