Nutrients are needed for human growth and maintenance, and the physiological functions and toxicity of nutrients have a long history of research, and their effects on the health of the body are also clear. The nutrient requirements of different populations and different life stages are not exactly the same. From the history of the discovery of various nutrient functions, it is generally necessary to restore the recovery after the occurrence of nutrient deficiency in the body. Therefore, nutrients is aimed at preventing and treating diseases.