Abstract: Swine streptococcosis is a zoonosis caused by many different kinds of pathogenic streptococcuses. This disease not only endangered the healthy development of swine industry, but it also could cause the disease incidence and death of human. The research progresses on the pathogen, epidemiological characteristics, pathogenic factors and pathogenic mechanism of swine streptococcosis were introduced, so as to provide references for the effective diagnosis and cure of swine streptococcosis.