Chromium is one of the essential trace elements for both human and animals and it plays an important role in many physiological functions in vivo. This article mainly expounded the effects of organic chromium on material metabolism, reproduction and endocrine, immune function, and anti-heat stress in animals, as well as its supplementation effect and toxicity for the purpose of studying the nutritional effects of organic chromium for references.［Chinese Journal of Animal Nutrition, 2010，22（5）:1186-1191］