The air sterilization machine uses physical, chemical, or other methods to kill or remove viruses, bacteria, fungi, and other pathogens from the air, with sterilization and disinfection as its primary purpose and air purification as a secondary function. It is classified as a sterilization device. Can be used in densely populated and highly trafficked public spaces such as medical institutions, transportation hubs, government offices, schools, banks, hotels, and also in households.

The air sterilization machine achieves sterilization and disinfection by using UVC (275nm ultraviolet light) to damage the DNA and RNA structures of microbial organisms (such as bacteria, viruses, and other pathogens), causing them to die rapidly.  Due to higher testing standards, air sterilization machines can more professionally and thoroughly eliminate viruses in the air, making them an important measure for preventing viruses.