The mask is suitable for the protection of airborne respiratory infectious diseases by medical staff and related workers. It is a self-adhesive filtering medical protective device with high protection level, and is especially suitable for contact with airborne or Onset in patients with droplet-borne respiratory infections. It can filter particles in the air, block droplets, blood, body fluids, secretion droplets, etc., and belongs to disposable products. Bacteria, viruses and other pathogens, WHO recommends that medical personnel use protective masks against particulate matter to prevent virus infection in the hospital air.