Porcine Torovirus (PToV) is widely distributed in the world with high prevalence rate in swinery.Due to the high detection rate in diarrhea pigs,PToV is thought to be a potential pathogen of swine diarrhea.In recent years,epidemic outbreaks of diarrhea with high morbidity and mortality in China have caused great economic losses.Intertypic recombination events and antigenic cross-reactivity among toroviruses implies potential zoonotic transmission of PToV.The review represented the development history of PToV and made a brief summary of the features in genome and protein epidemiology and laboratory diagnosis of the PToV,and so on.