Trace element feeds are widely used in animal farming today, and trace element feeds are at the forefront of research. In these years, traditional inorganic salts were used to extract trace elements, but with the deepening of research and the extension of the timeline. Traditional inorganic salts have been found to have more and more safety hazards in the process of production and use, mainly reflected in the quality problems and environmental pollution problems of livestock products. These phenomena have caused widespread concern and anxiety. This article will analyze the safety hazards caused by trace element feed.