Zinc is an essential trace element in the human body, and zinc supplementation plays an extremely important role in human growth and development, immune regulation, genetic factors, and endocrine. Zinc deficiency can lead to loss of taste, anorexia, paranoia and even dysbiosis of intestinal flora, while zinc deficiency can lead to a decrease in cellular immune function, inability to maintain vitamin A metabolism and normal vision. Zinc deficiency in the elderly can lead to weakened resistance, slow reaction, decreased appetite, memory loss, etc. Taking zinc tablets for zinc supplementation has various advantages such as maintaining normal appetite and body metabolism, promoting growth and development, enhancing human immunity, affecting vitamin A metabolism and normal vision, and improving disease resistance, which are important for increasing health and improving quality of life.