(1) Brief Introduction Thus it can be seen from the pollution avenues that people us are an important source of pollution. Article is one of the main media which affects air purifying (80% of the dust come from human beings). So we should adopt strict and scientific management policy to control the pollution In order to ensure the disinfecting efficiency and great efficiency after long-term''''s usage, the practical use of dynamic disinfecting must adopt multi-technique and reasonable settings. Only coordinate well can achieve a perfect result because single function of disinfecting has a weakness (2). operating principles ■ High-strength ultraviolet sterilizing As early as 1942, scientists found that the lethal dose for ultraviolet to some microorganism is: Staphylococcus aureus: 2180-4950uw.s/cm2 Typhoid bacillus: 2140uw.s/cm2 Bacterium coli: 2100-6400 uw.s/cm2 Bacterium aeruginosum: 6500uw.s/cm2 From 1987 to 1990, some home and abroad scientists proved that the average ultraviolet strength of 9400uw/cm2 could kill the germs in flowing air in 0.0625 to1 second. So we erect high-strength and long service life ultraviolet tube without ozone and the equipment which could improve the ultraviolet radiant intensity in the machine. So the built-in radiant intensity comes over 11000-15000uw/cm2. The government prescribed that the ozone concentration must be less than 0.16mg/m3 in the place with creatures. So our products have been tested by SCCDC and the ozone density is less than 0.06mg/m3 in the process of working which is identical with the concentration of air. ■ Filtering, dusting and degerming Air filtering is the most effective, safety, practical and convenient means of disinfecting. So adopting suitable filter will ensure blowing in airstreams attaining the required density of dust and germs. (Equal to the three-level filtering of 1st class environment requirement of china. The notebook of America for the engineers institute on heating, refrigeration and air conditioner and of 1998 pointed out) ■ Oxygen anion generator Oxygen anion is the air microorganism for the living room of human beings. People are energetic and feel well physically in the environment wi