The embodiment discloses a remote air conditioner control method, device and system. One method comprises the steps of building a connection between a first device and a second device by a near field communication technology; sending an air conditioner control instruction to the second device through the first device based on the connection in order to instruct the second device to convert the air conditioner control instruction into a corresponding infrared signal to be sent to an air conditioner. Another method comprises the steps of building the connection between the second device and the first device by the near filed communication technology; receiving the air conditioner control instruction from the first device through the second device; converting the air conditioner control instruction into the corresponding infrared signal through the second device; sending the infrared signal to the air conditioner. According to the technical scheme, the method, the device and the system have the advantages that the control mode of the air conditioner can be optimized, and the control cost can be reduced.