The invention relates to the technical field of traditional Chinese medicine, and discloses application of herbapatriniaeand a traditional Chinese medicine composition for treatingthe porcine reproductive and respiratory syndrome. According to the application and the traditional Chinese medicine composition,technologies such as Western-Blot, qRT-PCR, and cell apoptosis are utilized to prove through all levels of experimentsthatherbapatriniaeextract can significantly inhibit PRRSV infection and replication, significant in vivo and in vitro anti-PRRSV virus effects are realized, the herbapatriniae extractmay be used as the novel medicine for preventing and treating the porcine reproductive and respiratory syndrome,and a good application prospect in preventing and treating the porcine reproductive and respiratory syndrome is obtained.