Indoor unit address matching method and device and air conditioning system

The invention discloses an indoor unit address matching method and device and an air conditioning system. The indoor unit address matching method is applied to the air conditioning system of an air conditioner humidifier; the air conditioner humidifier comprises N water tanks; and the water tanks are connected with an indoor unit through a humidifying pipeline, wherein N is a positive integer. Theindoor unit address matching method comprises the following steps: after receiving an addressing command sent by the indoor unit, adjusting the temperature of the N water tanks; obtaining the operating monitoring parameters of the indoor unit after the temperature of the water tanks is adjusted; and carrying out address matching on the indoor unit and the water tanks according to the operating monitoring parameters. According to the indoor unit address matching method, precise and automatic address matching of the indoor unit and all water tanks is realized, accuracy of normal communication between the indoor unit an