The invention relates to a power distribution room environmental parameter control system, which comprises a first temperature sensor, a second temperature sensor, a control unit, a fan and an air conditioner, wherein the first temperature sensor, the second temperature sensor, the fan and the air conditioner are respectively and electrically connected with the control unit, the indoor and outdoortemperatures are monitored through the first temperature sensor and the second temperature sensor, and the fan or the air conditioner is controlled through the control unit according to the comparison result of the indoor temperature and the environmental temperature, so that the temperature in a power distribution room is more conveniently and automatically regulated and controlled.