The invention relates to a subway station air monitoring and air conditioning control device. The device comprises a sensor component (1), a processor (2), a wireless transmission module (3), a server(4) and a display (6), wherein the sensor component (1) is connected to the processor (2), the processor (2) is respectively connected to the display (6) and an air conditioner (8) in a subway station, and the processor (2) is further connected to the server (4) through the wireless transmission module (3). Compared with existing equipment, the scheme of the invention does not require any modification to the original structure of the station, is low in cost and simple and effective to implement, and can quickly and conveniently monitor the air quality of the station, control the power of an air conditioning system and improve the comfort level of passengers on a train.