The invention belongs to the field of an electric appliance and ventilation equipment, and provides an energy-saving fresh-air air conditioner control system. The energy-saving fresh-air air conditioner control system comprises a straight air inlet passage, a straight passage control device and a controller, wherein the straight air inlet passage is a passage in which outdoor air entering a room does not exchange heat with air discharged from the room; the straight passage control device comprises a fan or an electric control air valve and is used for controlling the state of the straight air inlet passage, and the state includes an opening state and a non-opening state; the controller is used for controlling the straight passage control device to control the state of the straight air inlet passage according to a relation of an indoor temperature, a set temperature and an outdoor temperature. According to the technical scheme, the energy-saving fresh-air air conditioner control system has the advantages of energy conservation and applicability to the all-weather condition.