In recent years, multi-drug resistant bacteria have become an important pathogen of mpsocomial infections, and the various infections caused by it have shown the characteristics of complexity and refactory. It is already a major problem faced by sensory personnel, doctors and hospital managers. On the other hand, Ebola hermorrhagic fever, H7N9 and other infectious disease outbreadks and sudden public health incidents occur from time to time, making some traditional prevention and control measures facing increasingly sever chamllenges, it is difficult to completely block hospitals with multi-drug resistant bacteria. Internal infection is also difficult to meat the current disinfection requirements of the public health field.