Atractylodes macrocephala polysaccharide is an effective active ingredient extracted from the traditional Chinese medicine Atractylodes macrocephala.It has the functions of improving animal intestinal health and immune function,and has a good effect in improving the growth performance and immunity of livestock and poultry.This article mainly reviews the structure,composition and extraction process of Atractylodes macrocephala polysaccharide,its regulatory mechanisms on animal intestinal health and immune function,as well as its application effects in livestock and poultry production,in order t...