The invention belongs to the technical field of intelligent control, and relates to an air conditioner intelligent controlling device and an operating principle thereof. The invention provides the intelligent controlling device of a non-intelligent air conditioner to solve the problems that the non-intelligent air conditioner cannot be well controlled and a plurality of failures occur. The air conditioner intelligent controlling device comprises a power source module, and further comprises a non-intelligent air conditioner which is electrically connected with the power source module, an intelligent controller which is electrically connected with the non-intelligent air conditioner, a center controlling table which communicates with a communicating module, a sensor module which is electrically connected with the intelligent controller, and the communicating module which is electrically connected with the intelligent controller. The intelligent controller comprises a displayer which is electrically connected with a controlling module, a button which is electrically connected with the controlling module, a driving circuit which is electrically connected with the controlling module, the controlling module which is electrically connected with the communicating module, an electromagnetic relay which is electrically connected with the controlling module, and a wiring channel which iselectrically connected with the controlling module.