Most people’s leg length to height ratio is about 1:2, if from an aesthetic point of view, the ratio of leg length to height is about 1:0.618, looks more beautiful, but there are individual differences, some people due to congenital genetic reasons, leg length and height there are some slight differences, belongs to the normal phenomenon, do not worry too much. Factors affecting leg length are mainly congenital genetics, if the parents’ legs are longer, the offspring’s legs are longer chance, but if the parents’ legs are shorter relative to height, the offspring’s legs are longer chance is smaller. Factors that affect height include genetic factors, sleep factors and nutritional factors. Generally the main role of height is secreted by the pituitary gland of the lower thalamus growth hormone, growth hormone mainly exists in the blood, usually secreted at night during sleep, if the quality of sleep is good, can promote the secretion of growth hormone, thus stimulating bone development, conducive to height growth, and adequate nutrition is also an important factor in the growth and development of adolescents. The ratio of leg length to height is mainly influenced by congenital factors, if the overall height grows, the corresponding leg length also grows. The main ways to grow height in adolescents are diet, exercise and getting enough sleep. It is recommended to exercise 20-40 minutes a day, such as pull-ups, basketball and other exercises that help height growth, while ensuring adequate nutrition, supplementing protein and calcium, and drinking more milk appropriately for supplementation, which is conducive to height growth.