A place that cures people's illnesses and relieves their pain. Here every day receives a large number of paients, Patients will carry a largenumber of bacteria. if there are not enough disinfection measures, then the hospital will absolutely become a warehouse of bacteria.Air is the medium of many diseases. lndoor air polution and microbial pollution on the surface are especially easy to cause secondary intectionin the hospital, are a serious threat to the health of hospital staffs and patients.