Magnolol and honokiol are two main polyphenols active substances in traditional Chinese medicine Magnolia officinalis. They have many biological activities, such as anti?oxidation, antibacterial and anti?inflam?matory. They are one of the effective choices for the development of new anti?stress health additives in modern livestock and poultry breeding. In this paper, the biological characteristics, metabolism, function and prelimi?nary application of magnolol and honokiol were reviewed in order to provide basis for its feeding re...