Abstract: With the continuous expansion of pig farming scale, people are paying more and more attention to the prevention and control of porcine viral diseases. In the practice of pig disease prevention and control, interferon is used for the treatment of viral diseases, which has a better rehabilitation treatment effect. However, the incorrect use of interferon can also have serious consequences. In view of this, with the central topic of research on the application of interferon in the treatment of viral diseases in pigs, a systematic and comprehensive analysis of relevant key knowledge was conducted for peer reference and reference.