Uses multi-stage air purification and filtration, devices, high intensity ultraviolet rays, high precision air quality sensors and low pressure silent circulating fans to perform multi-level and all-round disinfection and purification of the targeted area. Achieves a dust free and odour free space but removing dust, odours, harmful gas and has antibacterial functions. Significant absorption and filtration functions for continuously volatilising polluted gas generation by decoration. It can easily achieve partial dust free and sterile space in a short amount of time. Keeps harmful germs and polluted air away when indoors. Can be ceiling mounted, wall mounted or mobile installation.