Folium Artemisiae Argyi powder is a perennial herb of Compositae. It is not only a cold medicine in traditional Chinese medicine, but also a good feed additive for livestock and poultry. According to the test, Artemisia argyi leaves not only contain high-quality crude protein, crude fat and carbohydrates, but also contain a variety of vitamins, minerals, essential amino acids and chlorophyll for livestock and poultry. Appropriate consumption of mugwort leaves by livestock and poultry can not only prevent diseases and strengthen the body, but also promote blood circulation, enhance metabolism, promote the growth and development of livestock and poultry, and improve the feed conversion rate. According to the experiment of feeding pigs with 2% Folium Artemisiae Argyi powder, the daily weight gain of pigs is 35g-38g more than that without Folium Artemisiae Argyi powder, the weight gain rate is increased by 5.5%-5.7%, and the feed is saved 12%- 12.5%.