In recent years, livestock and poultry farmers have developed rapidly. Captive livestock, especially caged poultry, have frequent micronutrient deficiencies and need to be supplemented in the form of trace element feed additives. Although the trace element feed does not contain energy, it has a close relationship and a huge influence on the metabolism of energy-producing proteins, carbohydrates, fats, etc., and is essential for ensuring the health, growth and development of livestock and poultry. This article will specifically describe the information on trace elements.