Sicinivirus is a new picornavirus detected in chickens，which has been reported only in some countries，and preliminary study was carried out. In order to learn，prevent and control the virus，its classification，genomic characteristics，pathogenicity，epidemiology and detection methods were reviewed. Sicinivirus is a new genus，which has only one species currently，namely sicinivirus A，including 5 genotypes. The genome structures of different strains of sicinivirus were almost the same，only encoding one polypeptide. Sicinivirus might be an entericvirus associated with stunting and malabsorption syndromes of chickens，but its pathogenicity and pathogenesis had been unclear. At present，it was found that only chickens could be infected with the virus，but its spread pathways and interspecies transmission still were unclear. The detection rate of the virus was higher although it was detected in few counties or regions，and it was speculated that the virus might be widely spread in chicken flocks. No any specific methods had been developed to isolate the virus that could be detected only by conventional PCR，fluorescence quantitative RT-PCR and metagenomics. This paper will provide some references for the study，prevention and control of the emerging new avian pathogen.