Zinc plays an important role in many physiological functions of the human body. It participates in the synthesis of many enzymes, accelerates growth and development, enhances the regeneration capacity of wounded tissues, enhances resistance, and promotes sexual function. The syndrome caused by the dysfunction of various systems in the body due to zinc deficiency is called zinc deficiency. Zinc is one of the essential trace elements for the human body. Its content in the body is second only to iron. Among the 3.4×1026 atoms in the body of a newborn, zinc atoms account for 5.1×1020. As early as the 19th century, it was discovered that zinc is necessary for plant growth. In the 1930s, people began to understand the relationship between zinc and animal growth and health, but it was not until 1963 that Praead first proposed the issue of zinc deficiency in humans. In the past 20 years, the relationship between zinc and human physical growth, development and health has been further valued. Zinc has many physiological functions, and zinc deficiency will lead to many functional disorders.