Their are a number of infectious diseases in pigs that are transmitted through the air. This study reviews the general principles of the airborne pathway, including aerosol production, decay and inhalation. The study also discusses practical issues about aerosol sampling and sample analysis. The research describes in detail aerobiology of porcine diseases, including foot-and-mouth disease, Aujesky’s disease, and respiratory diseases. Also discussed is other disease that have potential to be transmiteed through the air. Some considerations suggestted for preventing airborne diseases in pigs are: dust reduction, air filtration, air disinfection, vaccination and the establishment of disease-free regions.