The invention discloses a power supply method for an air conditioner wire controller, and belongs to the technical field of air conditioner wire controllers. The power supply method solves the problems that the power supply control mode cannot achieve an intelligent effect, a person walks back and forth to start an air conditioner very troublesomely, an existing power supply method for a wire controller cannot intelligently start the air conditioner, the user experience cannot be improved, and a better use effect can not be achieved. The power supply method has the advantages that various types of data are acquired through a data acquisition module, corresponding numerical values are acquired and then are processed by a data processing module, in addition, the processed values are compared with an internal interval of a threshold terminal, the operation mode of an intelligent system is confirmed through the comparison result, the intelligent system is divided into three operation modes, namely zero energy consumption, low energy consumption and high energy consumption, different modes are started according to different room numerical values, electric energy can be effectively saved, meanwhile, the intelligent system can well adapt to indoor personnel, so that the indoor personnel can have good use experience.