Zinc has many uses, including the promotion of human growth and reproduction, participation in sugar metabolism, the role of promoting wound healing, is one of the body’s essential trace elements. Promote growth and development: The synthesis of nucleic acids and proteins and the development of cells are closely related to the involvement of zinc. At the same time, zinc is a component of many enzymes, will participate in the growth of human bones, promote the metabolism of human nutrients; in addition, zinc is also necessary to maintain the normal growth of skin elements. Therefore, zinc plays an important role in human growth and development. Promote reproductive development: zinc can participate in the development of sexual organs, if the human organism long-term lack of zinc, will affect the development of secondary sexual characteristics of adolescent males, and even cause sterility. It can also lead to delayed menstruation or even amenorrhea in adolescent females. Involved in glucose metabolism: Zinc can be involved in the production, secretion and storage of insulin, so zinc can be involved in the body’s glucose metabolism. Promote wound healing: Zinc can maintain the normal adhesion of epithelial mucosal tissues, so when the patient after surgery or the patient’s wounds appear wrinkled or open, the use of zinc oxide ointment is effective.