Abstract: Swine influenza (SI) is an acute respiratory infectious disease caused by influenza A virus. Primary diagnosis of SI include clinical symptoms and pathological changes, while a final diagnosis depend on laboratory diagnostic methods, such as electron microscopy, isolation and identification of virus, serological test, immunological test and molecular biological method. This paper reported recent research progress on traditional and moecular biological diagnostic techniques for swine influena, which will provides scientific basis for a further study and rapid diagnosis of swine influenza. 

Key words: swine influenza; diagnosis technology