The growth of a person’s height from birth to adulthood is regulated and controlled by a variety of hormones in the body, of which growth hormone is the most important one that regulates height. Growth hormone is a peptide hormone produced by the human pituitary gland, which mainly stimulates the growth of bone and cartilage, making the human body taller. It also promotes the synthesis of proteins and the absorption and storage of calcium, phosphorus, iron and other elements, providing the necessary material raw materials for growth. The production of growth hormone in normal children should increase after sleeping, reaching a peak during deep sleep. At the same time, sleep relaxes muscles and facilitates the growth of bones and joints. Therefore, a good sleep can promote the growth of human body. Exercise can also stimulate the pituitary gland to produce growth hormone, and at the same time, exercise can promote blood circulation in bones and muscles, providing more nutrients for growth hormone, so regular participation in physical exercise is beneficial to growth. Some children, for some reasons (congenital or acquired), affect the pituitary gland to produce growth hormone, so that the level of growth hormone in the body decreases or even lacks, which will cause the growth rate to slow down or even stagnate. The weight and height of such children can be normal at birth. Generally, the growth rate of children is gradually found to slow down after one year of age, and the older the child is, the greater the gap with normal children, a baby face, small hands, small feet, proportional body, normal intelligence, delayed teething, and lagging bone age. To confirm the diagnosis, the growth hormone level should be tested and a comprehensive examination should be conducted by an endocrinologist. In recent years, there is synthetic growth hormone in China, which has exactly the same structure as the growth hormone secreted by human pituitary gland. After treatment, the height can be increased by 10-14 cm per year. At present, growth hormone is also widely used, but it must be applied under the guidance of an endocrinologist. Some parents and elderly people think that it is okay for their children to be small and that they may be “late growing”, which is medically called delayed physical puberty, meaning that puberty develops later than that of children of the same age, but generally girls develop before the age of 16 and men before 18. Adolescence is the final sprint stage of human body growth, is a period of accelerated height growth, the whole puberty height increase of about 25-28 cm. However, these children only account for a small percentage of short children, how to know whether the child is “late growth”, to find the secretion specialist to confirm the diagnosis, so as not to delay treatment.