The medical protective mask is suitable for medical personnel and relevant staff to protect against airborne respiratory infectious diseases. it is a kind of tight self-priming filter type medical protective equipment with high protection level, it is especially suitable for patients who are exposed to respiratory tract infection diseases transmitted by air or droplets in close range during diagnosis and treatment activities. it can filter particles in the air and block droplets, blood, body fluids, secretion droplets, etc. it is a disposable pruduct. medical protective masks can prevent most bacteria, viruses and other pathogens,WHOIt is recommended that medical personnel adopt protective masks against particulate matter to prevent virus infection in hospital air.