Abstract: This paper had obtained the data related to porcine reproductive and respiratory syndrome (PRRS)，hog cholera(CSF) and porcine circo virus (PCV-Ⅱ ) by questionary , locale inquire and sample detecting for all kind of scale hogpen in Henan province. The results showed that porcine reproductive and respiratory syndrome virus (PRRSV) positive hogpen was 34.4%, hog cholera virus (CSFV) positive hogpen was 41.7%, PCV-Ⅱ positive hogpen was 36.2%; the percentages of coinfections of CSFV with PRRSV, CSFV with PCV-Ⅱ was 24.54% and 37.79%, PRRSV with PCV-Ⅱ was 36.87%.The above results suggested that three viruses infection was graveness and the coinfections between the viruses were very prevalent in provinces．