Compared with some conventional ultraviolet, ozone and chemical disinfectant fuming air disinfecting ways, dynamic air disinfecting equipment of laoken has very obvious advantages and distinctions. This equipment could continuously work in the environment with people. And it could control the germ concentration under 200cfu/m3. which will do well to the recover of the patients as well as prevent the disease which infected through air, such as: SARS and Bird Flu. Moreover, the device will do no harm to the people in the process of working.