Abstract: The keys on household appliances mostly use capacitive touch, and its use environment is complex and changeable, and the environmental changes will change the parameters of the touch system, eventually leading to the insensitive or misaction of the keys, affecting the user's use.Therefore, it discusses the influence of temperature and humidity in the environment on the touch system. At the same time, in order to solve the abnormal keys caused by environmental changes, a software adaptive algorithm scheme is introduced, which can effectively improve the adaptability of touch keys to environmental changes, and has guiding significance for the design of touch keys in home appliances.

Key words: Touch key, Parameter, Auto-adapting, Environment