TCL Xiaojingling is an intelligent voice air conditioner, which has a high-patented dual energy-saving mode and adopts fuzzy+expert PID control mode. It can realize load adaptation and external machine control, which not only saves energy and noise, but also improves the use effect and achieves more efficient energy saving effect. Under the dual energy-saving mode of high allocation, the electricity cost saved by using TCL Xiaojingling for ten years is about 28 10 yuan. No matter in summer or autumn and winter, there is no need to have electricity cost anxiety when using the machine for a long time [1]. At the same time, TCL Xiaojingling's design is simple and fashionable, pays attention to details and comfort, and adopts high-quality materials to ensure the quality and performance of products [2]. Therefore, TCL Xiaojin belongs to middle and high grade.