The invention provides an air conditioning system for a breeding house, a control method and device of the air conditioning system and a storage medium, and relates to the technical field of air conditioners. The system involves an air conditioning unit, an air treatment device, a detection device, an exhaust fan device and a control device; the air conditioning unit comprises an indoor unit and an outdoor unit, and the air treatment device is integrated inside the indoor unit; and the detection device comprises a temperature detection device, a humidity detection device and a gas detection device which are arranged in the breeding house, and the control device is used for controlling the air conditioning unit, the air treatment device and the exhaust fan device to operate according to detection data of the temperature detection device, the humidity detection device and the gas detection device. According to the system, the method and device and the storage medium, the air quality in the breeding house can be improved, the temperature and humidity in the breeding house can be adjusted, and automatic monitoring of the environment in the breeding house and high-precision and intelligent adjustment and control can be achieved.