Abstract:Endometritis in sows is a commonly occurring reproductive system disease in large-scale pig farms,which can cause estrus disorders in sows,infertility for a long time,affecting the production performance of sows,and causing great economic losses to pig farmers.From March 2023 to November 2023,the therapeutic effect of different dosages of motherwort and Angelica sinensis and the way of administration in the formula of the Chinese herbal medicine Yiguisan on the treatment of endometritis in sows was tested.The results showed that the cure rate of endometritis in sows could reach 87.5% by increasing the dosage of motherwort and A.sinensis in the formula of Yiguisan and using uterine infusion to treat endometritis in sows.This test overcame the shortcomings of the traditional treatment method of using multiple antibiotics to treat endometritis in sows,such as poor therapeutic effect,antibiotic resistance,veterinary drug residues,easy recurrence,etc.,and achieved the effects of environmentally friendly,precise therapeutic effect,not easy to recur,small impact on the sows and fetuses,and ease of promotion.It provides a basis and approach for clinical treatment of endometritis in sows.